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8A 期末复习
Unit 1知识点
1.something to drink/eat 一些喝的/吃的东西
2.some more food 再来些食物
补充：数字+more = another +数字
如：three more apples = another three apples 再来三个苹果
3.an honest boy 一个诚实的男孩 a dishonest boy 一个不诚实的男孩
4.keep a secret = keep secrets 保守秘密 keep a diary = keep diaries 记日记
5.share my joy 分享我的快乐 （joy 不可数）
- 6.做某事有困难：have problems （复数）(in) doing sth.
have trouble（不可数） (in) doing sth.
have difficulty （不可数）(in) doing sth.
7.believe what he says = believe his words 相信他所说的话
8.lie 谎言 ： tell lies（可数） 说谎 tell stories 讲故事 tell jokes 讲笑话
lie v.动词， 躺 lie ---lay--lain
- 9. interested adj.感到有趣的，一般修饰人 interesting adj. 令人感到有趣的，一般修饰物
interesting属外向性质的词，用于指人、事、物的外在影响方面，意为“使（外）人感兴趣的”；
interested属内向性质的词，用于指人的内心感受方面，意为“（内心）对„„感兴趣的”
试比较：
a）That interesting old man came to our school every day.那个有趣的老人天天到我们学校来。（外在影响）
b）An interested foreigner came and visited our school.一位感兴趣的外国人来参观我们学校。（内心感受）
a）This book is interesting to me.这本书在我看来很有趣。（外在影响）
b）I’m interested in this book. 我对这本书很感兴趣。（内心感受）
课本例句：1)I think good friends should be interesting too. (page7)（外在影响）
2) Max is so interesting. (page8)（外在影响）
10.one of +形容词最高级+名字复数 如： one of my best friends one of the tallest boys
- 11. has 动词，“长着，”在句中作谓语动词；with 介词，“长着，戴着”，在句中作定语
wear 动词，“穿着，戴着”，在句中作谓语动词； in 介词，“穿着”，在句中作定语
1) My sister has short hair. 动词，长着，做谓语动词
2）The girl with short hair is my sister.介词，长着，做定语，修饰the girl,不可用has,因为句中已经有谓语动词is
3) My sister wears small round glasses.
- The girl with small round glasses is my sister.
课本例句：She’s a small girl with a ponytail.（page14)（作定语）
12.help sb. (to) do sth, 帮助某人做某事 help sb. with sth.
13.be willing to do sth.= be ready to do sth. 乐意做某事；愿意做做事
14.give one’s seat on the bus to someone in need 在公交车上给需要的某人让座
15.have a good voice 嗓音甜美 voice 嗓音 sound 声音 noise 噪音
16.want to be 想成为 grow up 长大
17.have a (good) sense of humour = be (very) humorous (很）有幽默感
a sense of ... ......感
18.bored adj. (人）感到无聊的 boring adj.(物）令人感到无聊的
feel bored 感到无聊的 a boring football match 一场令人感到无聊的足球赛
19.walk past 走着经过 past 介词 动词+past
pass 动词（及格；通过）
20.knock ... onto the floor 把......撞到地板上
21.say a bad word about sb.说某人的坏话
① say to oneself 自言自语；
② speak +语言; 打电话；作演讲
③ talk with/to sb.; talk about sth.
④ tell sb sth.; tell sb. (not) to do sth.; tell stories/jokes/lies 讲故事/讲笑话/说谎
22.true adj.正确的，真实的 truly adv.（副词） truth n. 真相，真理，事实
23.sb.worry about sth./sb. =sb. be worried about sth./sb. 某人担心某事/某人
sth. worry(worries三单/worried过去式) sb.某事让某人担忧
如： Something worries me.(something 不定代词做主语，谓语动词用三单）
24.look smart in his small round glasses 戴着圆圆的小眼镜让他看起来很神气
- look +adj.+in sth. = sth. look +adj.+on sb.
25.be famous to 对于......很出名 be famous as 作为.....出名 be famous for 因为.....很出名
26.make friends with sb. 和某人交朋友
27.listen to sb. carefully 认真地听某人讲话
careful adj. 认真的，仔细的 adv.carefully <反> adj. careless 粗心的 adv.carelessly
28.travel around the world 环游世界
29.be kind to sb. 对某人很好 be friendly to sb.对某人友好的
30.an artist 一名艺术家
31.learn more about 了解更多关于..... learn 过去式：learned/ learnt
32.take part in +比赛/活动= join in +比赛/活动 “参加......” join +组织/sb. “加入”
join sb. in doing sth. 加入某人做某事
33.be both/ be all （both/all放be动词后）
34.smile v.& n. 微笑 adj. smiling 微笑的 smiling eyes
wear/have a smile on one’s face 面带微笑
35.patient n. 病人 adj.有耐心的 <反> impatient 没有耐心的，急躁的
an impatient teacher
36.make an excellent teacher 成为一名优秀的教师
37.形容词中比较级和最高级需要双写最后一个字母，再加er/est的词语口诀：
大（big)热（hot）天,一个穿红（red）衣浑身湿（wet）透的伤感（sad）胖（fat）子想要变得又瘦（thin）又苗条（slim）
38.what be sb.like ? 问某人的长相或品格
what do(does) sb. look like? 仅询问某人的长相
what do(does) sb. like? 问某人喜欢什么
39.luck n. 运气 Good luck to you.祝你好运。
lucky形容词. 幸运的 --luckily 副词.
反义：unlucky .不幸的（形容词）
Unit 2知识点
1.why don’t sb. do sth.?= why not do sth.?
2.an advertisement 一则广告 few/many advertisements
3.in Year 8 (Year Eight) 名词+基数词（首字母都要大写）= in Grade Eight= in the eighth grade
一般情况下：名词+基数词（首字母都要大写）= the +序数词+名词 （首字母小写）
如： Lesson One = the first lesson
4.a mixed school 一所男女生混合的学校
5.have lessons 上课
6.Learning foreign languages is fun. 动名词做主语，谓语动词用单数
fun n.乐趣；娱乐活动；嬉戏，嬉闹；有趣的事 adj.使人愉快的；开心的
funny adj.滑稽的，可笑的
what (great/good) fun! have fun it is fun. (都不要冠词）
7.borrow “借入” lend “借出”
borrow sth. from sb. 向某人借某物 lend sth. to sb. 把某物借给某人
8.seem to do sth. 似乎做某事
seem (to be) +adj. 如：He seems（to be) unhappy today.他今天似乎不高兴。
9.offer sb. sth. = offer sth. to sb. 向某人提供某物
10.an article 一篇文章 what else = what other things
11.any other +名词单数= the other +名词复数 any other boy = the other boys
12.spend ... on sth. / (in) doing sth. 花费......做某事
13.wear uniforms 穿着校服 wear ties 打着领带
14.do morning exercises 做早操, do English exercises 做英语习题
exercise “体育锻炼”不可数，其余都可数
15.have (some time )off 休息（一段时间）
16.have time for something “有时间做某事”
17.go on a school trip 进行一次学校旅行
18.half an hour 半小时 three hours and a half= three and a half hours 三个半小时
19.have an English test 进行一次英语测试 read newspapers and magazines 读报刊杂志
20.at weekends= at a weekend=on weekends= on a weekend 在周末
Unit 3知识点
- exercise 意为“锻炼、训练、练习”
（1）做动词：You don’t exercise enough.
(2) 做名词：作“练习”和“早操”讲，是可数名词
如：If you want to improve your English,you must do more exercises.
They do morning exercises every morning.
- 2. need 意为“需要”，可作实义动词和情态动词
（1）实义动词：need + 名词/动词不定式
如： I need much more money.
You’re too fat, you need to exercise.
need + v.ing形式时表示被动意义
如：The flowers need watering.
Your clothes need washing.
(2) need 做情态动词时，不能单独作谓语, 只能和其他动词原形构成谓语； 在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前；疑问句中, 则在主语之前。 多用在否定句或疑问句中； 无人称和数的变化； 否定式构成是在后面加 "not"。
如： You need not attend the meeting tomorrow.
You didn't need to tell him the news; it just made him sad.
needn't + have + 过去分词 表示“过去做了没必要做的事情。 ”
You needn't have taken it seriously.
这件事情你不必太认真。
- enjoy onesflf 意为“玩的开心”，相当于have a good/great/wonderful time 或者have fun.
onesflf是反身代词，它包括ourselves我们自己；yourself你自己；yourselves你们自己；themselves他/它/她们自己；itself它自己；himself他自己；herself她自己；myself我自己
如： They enjoyed themselves during the holiday.
拓展：enjoy sth./doing sth.,相当于like
My little sister enjoys reading picture books.
- take a boat trip 意为“乘船旅行”。常用词组take a bus/taxi/plane to someplace
tour指的是在各处作短暂停留的长距离旅行。
trip(休闲或公事等的)短途旅行
travel到远方去或长期旅行
journey较正式的用语；通常指有预定地点的长途旅行。
- take care 意为“保重”或者“小心”
如：Take care not to hurt yourself.
拓展：take care of = look after
- invite sb. to do sth. 意为“邀请某人做某事”
如：I invited him to join our club.
Invite sb. to sp. 意为“邀请某人去某地”
如：Amy invited me to her birthday party.
- join 意为“加入、参加”，表示加入某个组织、党派或社会团体从而成为其成员。
如：join the pioneer 加入少先队 join the army 参军
join in 也是“加入、参加”，多指参加比赛或活动
如：Why didn’t you join in the talk last night?
- beginning 意为“开始、开端、起点”。 from beginning to end 自始至终
at the beginning = at first “起初，开始”，反义词组为at the end
at the beginning of…在…的初期 如： at the beginning of April 四月初
- arrive at 意为“到达”，arrive at +小地点（如村、镇、车站等）
arrive in 也是“到达”，arrive in +大地点（如国家、大城市等）
拓展：arrive,get和reach都有“到达”的意思，arrive和get都是不及物动词，前者较正式，后者较口语化。两者之后均不可直接加宾语，但可接here, there, home之类表地点的副词作状语。e.g. We got/ arrived here last night.
要表示“到达某地”，arrive要借助介词in或者at；而get其后需接介词to，
如：When we got to the park, it began to rain.
reach是及物动词，后面直接跟地点名词作宾语，reach Nanjing 到南京。Reach之后也可接here,there,home等词。
- be made of 意为“由…制成”，强调从成品中可以看得出原材料。
如：The desk is made of wood. 桌子由木头制成。
be made from 也是“由…制成”的意思,强调从成品中看不出原材料。
如： Paper is made from wood. 纸是由木头制成的。
拓展：be made in “由…制造”，强调产地
如：This kind of machine is made in China.
be made by “被…（人）制造”，说明制造者是谁
如：This ship is made by the workers.
- “It’s +adj. +动词不定式”句型，意为“做某事是…”
如：It's boring to stay at home. 呆在家很无聊。
此句中代词it只作形式主语，真正的主语是后面的动词不定式。所以此句可改成：
To stay at home is boring.
- It takes (sb.) some time to do sth.意为“花费某人多少时间去做某事”，这里的it作形式
主语，真正的主语是to do sth.
如： It takes me half an hour to walk to school every day.
- 反身代词。当主语和谓语是同一个人时，我们使用反身代词。
（1）反身代词做同位语，用于强调
如：The manager himself served the customers. （主语同位语）
The manager served the customers himself. （主语同位语）
I told them I wanted to see the manager himself.
(2) 反身代词作介词宾语
如： She finnshed the job by herself.
(3) 反身代词作动词宾语，有些动词与反身代词成固定搭配，翻译时“自己”多不译出。
enjoy oneself 玩的开心 help oneself 自便、自取
behave oneself 有礼貌、规矩
- take place 意为“举行、发生”。多指举行活动（无被动）
如：The school sports meeting will take place tomorrow.
happen 多指无计划，偶然发生的事。
happen to sb./sth.“遭遇”指不好的事发生在某人、某物上
如：What happened to you?
A car accident happened to him yesterday.
拓展：take one’s place或take the place of sb./sth. 意为“代替某人/某物”
- forget to do sth. 意为“忘记做某事”（未做）
如： My mother often forgets to turn off the light.
Don’t forget to bring your homework here tomorrow.
拓展：forget doing sth. 意为“忘了做过某事”（已做）
如： I’ll never forget seeing her dance for the first time.
He forgot turning the light off.
- as soon as possible 意为“尽早的”，相当于as soon as you can
如： Come back as soon as possible/ you can.
Unit 4知识点
1、 clear instructions清晰的说明
clear: a. 形容词，“清晰的，明亮的”，副词形式为clearly;
- 动词，“扫除，出去”，词组为clear up, clear way, “清理，打扫”
2、had better do sth. 最好做某事 had better not do 最好不要做某事
had不能改为have或has, 对上级或长辈不宜用此结构
3、 stand for 代表，象征
stand的词组： stand up站立，经得起，抵抗 stand in 代替，顶替 stand out突出，出色
stand by支持，袖手旁观，做好准备 stand back 往后退，置身事外
5、 decorate 动词，修饰，装饰。名词形式decoration. 常见词组decorate…with 用…装饰
6、 instead与instead of
instead 意为代替，替代，作副词用，通常位于句尾。如位于句首，常用逗号与后面隔开。
如: Lily isn’t here. Ask Lucy instead.
Instead of+ sth 或 Instead of + doing 是介宾短语，后面一般跟名词、代词、介词、短语动词-ing形式。
如: I’ll go instead of her.
7、be crazy about 热衷于，迷恋上 be crazy for渴望，迷恋上 drive someone crazy 使某人发狂
8、put in与put into
- put in 意为“安装，添上，插话” eg: Can I put in a word? 我能插话吗
- put into “将…注入” eg: He put as much feeling into his voice as he could.
9、keep doing与keep on doing: 两者均可表示“继续做某事，反复做某事”，但是keep on更强调时间的间隔性和动作的反复性，及某人做某事的决心。如: He kept on working until midnight though he was tired.
10、 advise的用法
advise doing sth. 建议做某事 advise sb to do sth. 建议某人做某事
advise sb against doing sth. 劝告某人不要做某事 advise sb of sth 通知或告知某人有某种情况
advice 名词 不可数
11、mix with把东西混合起来；mix up 弄混，误认为。。。是
12、add的用法
Add…to..把。。。加到。。中去 Add 补充说道 Add to增加，增添 Add…up 把。。。加起来
13、 It’s time的用法
It’s time to do sth.该做某事了。 It’s time for sth. 该做某事了
14、stop doing sth. 停止做某事
stop to do sth. 停下来做某事
15、fix, mend与repair的用法
A、fix侧重于修理，有时也可用作安装
如: The workers are fixing the machine.
B、mend着重修补小到日常用具，大到较复杂的物体
如: Can you mend a broken dish?
C、repair常指修缮损失重大或构造较复杂的失误，也可指修鞋
如: I am going to have my bike repaired tomorrow.
16、have fun + doing
同义词组 have a good/great/wonderful time = enjoy oneself 玩得开心
如: We had fun listening to Dream Show.
Did you have fun playing with your friends?
Unit 5知识点
1.would like to do sth. 想要做某事 would like sb. to do sth.想要某人做某事
2.could sb. please do sth.? could sb. please not do sth.?
3.have /take pity on sb. 同情某人 it's a pity!真遗憾！
4.die <动词>死亡 过去式：died 现在分词：dying (也可作形容词：垂死的） 形容词：dead 名词：death
如. His father died ten years ago. His father's death makes him feel sad. His father was dead.
The doctor saved a dying boy.
5.danger <名词>危险 adj. dangerous 危险的 be in danger 处境危险 be out of danger 脱离危险
6.live in the wild 生存在野外
7.in fact 事实上
8.重100多克 weigh over 100 grams
9.一开始 in the beginning
◇at the beginning常与of 连用，表示“在……之初”。in the beginning 一般不与of连用。
◇at the beginning 也可单独使用，表示“起初，开始”，这时可与in the beginning替换。at first和at the start
也有同样的意思。
10.go outside for the first time 第一次出去
11.八个月后 eight months later
12.以......为生 live on sth. live mainly on sth. 主要以...为生
13.学会照顾她自己 learn to look after herself
14.面临严重的问题 face serious problems = be faced with serious problems
15.竹林 bamboo forests
16.立即采取措施 take action right away
17.结果是 as a result
18.制定法律 make laws lawyer n. 律师
19.
| 释义 | 指代人/物 | 与疑问词连用 | 其它用法 | |
| nothing | 没什么；没什么东西 | 指物 | 用于回答what引导的问句。
----What’s in the bag? ----Nothing. |
1、不与of连用；
2、作主语时谓语动词用单数。 |
| nobody
/no one |
没有人；无人 | 指人 | 用于回答who引导的问句。
----Who’s in the classroom? ----No one. /Nobody. |
1、不与of连用；
2、作主语时谓语动词用单数。 |
| none | 一个也没有；毫无 | 指人；
指物。 |
用于回答How many/How much引导的问句。
----How many students are there in the classroom? ----None. |
1、可与of连用；
2、作主语时谓语动词用单复数均可； 3、用于指代前文中出现过的名词； 4、表示“三者或三者以上”的全部否定。表示“两者”全部否定用neither。 |
20.as a result 和as a result of 的区别
as a result 单独使用，后面一般用逗号隔开，并且不能连结2个句子。
He worked hard at his study.As a result, he passed the exam easily.
as a result of + 名词或者代词.
As a result of his hard work, he passed the exam easily.
21.it is difficult for sb. do sth.
22.however 与but区别：however与but 两者都做“但是，然而”讲，而且都引出并列句。从语义上看，but所表示的是非常明显的对比，转折的意味较however要强。从语序上看，but总是位于所引出的分句之首，而however却可位于句首、句中和句末，同时从标点符号上看，but之后一般不得使用逗号，而however则必须用逗号与句子其它部分分开。
23.sadly,luckily等副词，修饰一个句子时，常位于句首，用逗号隔开。
24.The horse is standing with its eyes closed. with +宾语+open/closed (形容词做宾语补足语)
25.work out 算出，解决 work out easy maths problems
26.get lost 迷路= lose one's way= lose oneself (lose的过去式：lost,其形容词也是lost)
27.anything special 不定代词的形容词放后面（定语后置）
28.save some food 储存一些食物 save v. 储存；救 save money 存钱 save water 节约用水
29.a short while 片刻
30.lose living areas 丧失掉居住地 lose one's life(pl.lives)丢掉性命
31.be dangerous to 对...危险
32.what a shame!=what a pity!真可惜！
33.act to protect wild animals 行动起来保护野生动物
34.in the daytime 在白天
35.sleep through the winter 冬眠
- make a living 谋生，维持生计
He makes a living by writing. 他靠写作谋生。
Unit 6知识点
- How many与how much的区别
How many用来修饰可数名词的复数，how much用来修饰不可数名词，表示数量，也可单独使用表示多少钱
- Rare作为形容词，意为“罕见的，珍贵的”，同义词是unusual.
- One of… 意为“…之一”，厚街名词复数。如果名词复数前有形容词修饰，则用形容词的最高形式。
- Provide sb. with sth. =provide sth. for sb.
- Cover (1) 名词，意思为封面，盖子，覆盖物，栖息地
（2) 动词，表示覆盖，遮蔽时，常与介词with连用；还可表示支付费用
- all year round 一年到头
- while意为然而，引导并列句，while前后句子结构相同，句意相反或者相对
- stay的用法：
- stay 作为名词，意为停留
- stay作为动词，意为停留，逗留，呆，继续
- in order to意为“为了”，表示目的。在用法和意义上与so as to结构类似，但是in order to结构可置于句首，句中，而so as to多用于句中。其否定式直接在to前加not.
- prevent sb. from doing sth. =stop sb. from doing sth. =keep sb. from doing sth.
- change a. 作为动词。Change..for… 用…换… change… into … 把…变成…
- 作为名词。表示改变，后面用介词in；还可表示找零。
- importance=be important
- see sb. do sth 看见某人做某事
See sb. doing sth. 看见某人正在做某事
15.be home to …的家园
- sound, noise与voice的区别：sound是指自然界中所有的声音；noise指很响的刺耳的声音；voice指人通过发音器官发出的声音。
Unit 7知识点
1.bring, take的区别：bring意为“带来”，强调带到说话人这边来。Bring sb. sth.=bring sth. to sb.
Take意为“带走”，是指从说话人这把某物拿走。
- look cool 看起酷 feel cool 感觉酷
- the best time to do sth.最某事的最佳时间，此处为动词不定式作后置定语，修饰前面的名词。
- favourite=like best 最喜欢
Which is your favourite season? =Which season do you like best?
5.be full of = be filled with 充满…
两者区别不大，基本可以通用。Be full of强调状态，be filled with强调过程
The box is full of apples. = The box is filled with apples.
- Forget to do sth. 忘记要做某事 forget doing sth. 忘记已做过某事
与remember的用法相同。Remember to do sth. 记得要做某事 remember doing sth.记得做过某事
- Be far away, be far from 与be+具体的距离+away from
- Be far away 意为遥远，后面不跟地点。Eg: My school is far away.
- Be far from 意为离…远，后面跟地点。Eg: My school is far away from my home.
- Be+具体的距离+away from表示具体的远。Eg: My home is 20 kilometers away from the hospital.
- What a perfect time to fly a kite!真是一个放风筝的完美时间啊！
- What + a/an +adj.+ 单数可数名词+主语+谓语！ What a fine day it is!
- What+ adj. +可数名词复数或不可数名词+主语+谓语！ What kind women they are!
- Turn的用法
- Turn动词，意为变化，尤指颜色方面的变化。如：Her face turns red.
- Turn动词，意为转弯。 如：Turn left, and you will see the hospital on your right.
- Turn名词，意为轮次。如：It’s your turn to read the book now.
- 固定搭配：turn on/off 打开/关闭（电视或收音机等电器） turn up/down 将声音调大/调小
- Fall down 落下，掉下 fall off 从…掉下来 fall over 搬到
- As the days are shorter and the temperature drops. As是连词，意为随着。
- Be busy doing sth. 忙着做某事。Eg; Farmers are busy harvesting crops.
- Catch a bad cold 得了重感冒
Have a high fever 发高烧
Cough 咳嗽
- Below是介词，意为在…下面，其反义词为above, 如 below zero 零下
Below 不强调在物体的正下方，under一般强调在物体的正下方。
- In the thirties 在三十几，这个数字往往指从30到39十个数字，所以用整数的复数表示。
Eg: She is about in her twenties. 她大概20几岁的样子。
- The rest of the week本周的剩余时间 the rest of sth = the other of sth.
Rest还表示休息，作为休息时，既可以作为动词又可以作为名词。
- How’s the weather？ 天气怎么样= What’s the weather like?
- A bit of与a bit
A bit 意为一点点，修饰形容词和副词，相当于a little
A bit of也表示一点点，但修饰名词，如a bit of water 一点点水
Unit 8知识点
1.rain的用法
- Rain作为动词，意为下雨，降雨。 It was raining hard when I got home yesterday evening.
- Rain作为名词，意为雨，大雨。Don’t go out in the rain.
- Rainy是形容词，意为有雨的，下雨的。 Spring is a rainy season in this country.
2.all的用法
- 副词，意为完全地，十分地。Eg: He is all wrong.
- 形容词，意为一切的，所有的，全部的。Eg: All the students in our school are friendly to us.
- 代词，意为一切，全部，后接复数动词，表示全体，大家。All goes well.
- final: a. 用作名词，意为决赛。Our school football team goes to the final.
- 用作形容词，意为最后的。I didn’t read the final chapter of the book.
- thousands of people成千上万的人 hundred of, millions of
如果hundred, thousand, million等前面加具体数字时，不可以用复数，也不可以和of连用。
5.wash away把…冲走 wash off 使某物被冲洗走 wash out 洗干净，洗掉 wash up洗去，把…冲上岸
- hear of听说 hear from sb.收到某人的来信
- like与as的区别
Like与as都表示“像…”，但like是介词，后接名词、代词或动名词，不可接从句；而as为连词，后接从句。
Like every other students, Tom is bad at grammar.
When in Rome, do as the Romans do.
8.in fear在恐惧中 in surprise惊讶地 in danger处于危险中 in a hurry匆忙地 in poor health 健康欠佳
9.try one’s best to do sth. 尽力做某事 = do one’s best to do sth.
Try doing sth. 设法、试图做某事
10.in all directions = in every direction 向四面八方
direction作名词，还可意为指示，说明
- Not…at all一点也不，根本
Not at all 不用谢
- Since, as, because三个词都表示因为，引导原因状语从句。
- Since表示稍加分析就得出来的双方都知道的原因，意为既然，也常为于句首。
Since everyone is here, let’s begin our meeting.
- As引导的从句多放于句首，表示十分明显的原因，意为由于，鉴于
As you were not there, I left a message.
- Because引导的从句常位于句末，表示直接的原因或理由，常用于回答why引导的问句。
I was late because I was ill yesterday.
- Already, still与yet
- Already多放于助动词前，强调事情的发生比预计或应该发生的时间早。
- Still表示某事正在进行还未停止，或某状态依然存在，某位置一般在句子的中间。
- Yet用来讨论某事在意料之中，多用于疑问句或否定句中。
