九年级unit4虚拟语气知识点
九年级英语Unit4
1. if引导的非真实性条件状语从句即虚拟语气
通过动词形式的变化来表示说话人对发生的动作或存在的状态
所持的态度或看法的动词形式称为语气,虚拟语气表示说话人所说的
话不是事实,而是一种祝愿,建议或是与事实相反的假设等。
If引导的条件状语从句分为真实和非真实条件句,非真实条件
句应用虚拟语气。如果要表示与现在或将来事实相反时,其虚拟语气结构为:句型条件从句主句
谓语动词形式动词过去式(be动词
用were)
would+动词原形
即:(从句)if +主语+动词过去式(b e动词用were), 一般过去时
(主句)主语+would+动词原形过去将来时
如:If I had time, I would go for a walk.
如果我有时间,我就会去散步。(事实上我现在没有时间)
If I were you, I would take an umbrella.
假如我是你的话,我会带上雨伞。(事实上我不是你)
I would say no if someone asked me to be in a movie. 假如有人请我当电影演员,我会表示拒绝。(事实上瑞没有人请我当电影演员)
2. pretend to do sth.假装做某事I pretended to sleep just now.
pretend +从句假装… I pretended that I fell asleep.
3. be late for 迟到如:
I am late for work/ school/ class/ party.
4. a few与 a little的区别,few与little的区别
⑴a few一些修饰可数名词
a little一些修饰不可数名词两者表肯定意义
如:He has a few friends. 他有一些朋友。
There is a little sugar in the bottle. 在瓶子里有一些糖。
⑵few 少数的修饰可数名词
little少数的修饰不可数名词但两者表否定意义
如:He has few friends. 他没有几个朋友。
There is little sugar in the bottle.在瓶子里没有多少糖。
5. still仍然,还用在b e动词之后,行为动词之前如:
I am still a student.我仍然是个学生I still love him.我仍然爱他。
6. hundred, thousand , million, billion (十亿)词前面有数词或veral
一词时要不能加s,反之,则要加s并与of连用,表示数量很
多如:veral hundred/ thousand/ million/ billion people
几百/千/百万/十亿人hundreds of trees 上百棵树
7. what if +从句如果…怎么办,要是… 又怎么样如:
What if she doesn’t come? 要是她不来怎么办?
What if LiLei knows? 如果李雷知道了怎么办?
8. add sth. to sth. 添加…到… 如:
I added some sugar to water. 我把糖添加到水里。
9. 系动词与形容词连用get nervous 变得紧张
feel shy 觉得害羞look friendly 看起来友好
10. too +形/副+to do sth.太…而不能如:
I’m too tired to stand. 我太累了而不能站。
11. help with sth.如:They help with this problem.
help sb. do.如:They help you relax. 他们帮助你放松
12. in public在公共场所如:
Don’t smoke in public. 请不要在公共场所吸烟。
13. energetic adj.活力的
如:She is a energetic girl. 她是一个活力的女孩。
energy n.活力如:She has lots of energies. 她有活力。
14. ask sb. to do叫…做某事
ask sb. not to dosth.叫…不要做某事
tell sb. to do告诉…做某事
tell sb. not to do sth.告诉…不要做某事
如:Teacher asked me to clean the classroom.
Teacher asked me not to clean the classroom.
15. start doing == start to do.开始做某事如:
He started speaking/ to speak. 他开始说话。
16. borrow sth. from sb.从某人那里借来某物如:
I borrowed a book from Lily. 我从莉莉那里借来一本书。
17.wait for sb.等某人如:I am wait for him. 我正在等他。
18. introduce sb. to sb.把某人介绍给某人如:
I introduced Lily to Anna. 我把莉莉介绍给安娜。
19.invite sb. to do邀请某人做某事如:
Lily invited me to go to her home for supper. 莉莉邀请我去她家吃晚饭。
20. have dinner/ supper 吃晚饭
have lunch/ breakfast 吃午餐、吃早餐
21. plenty of修饰不可数名词,也可以修饰可数名词许多如:
They have plenty of food/ apples. 他们有许多的食物/苹果。
22. 给某人某物give sth. to sb. 如:give an apple to me
give sb. sth.give me an apple 给我一个苹果
23. get along with sb.与…相处如:
Do you get along well with your friends? 你和你的朋友相处得好吗?
24. would rather do sth. than do sth.表示愿做某事而不愿做某事如:
I would rather walkthan run.
25. whole 整个26. in fact 事实上
27. let sb. down让某人失望如:
Don’t let your mother down. 不要让你的妈妈失望。
28. come up with sth.提出想出如:
He came up with a good idea. 他提出了一个好主意。
catch up with sb.追上赶上如:
Lily caught up with Anna. 莉莉赶上了安娜。
29. have experience doing在做某事有经验如:
I have experience teaching Chine. 我在教英语方面有经验。
30. come out出版,出来如:
The magazine comes out once a week. 这种杂志每周出版一次。
31. by accident偶然地,无意之中如:Last week I cut my finger by accident. 上个星期我不小心割到自己的手指。
32. hurry to do匆忙… I hurry to call the police.
33. more than超过
34. offer sb. sth.给某人提供某物
宾语从句宾语从句在复合句中作主句的宾语。
①由连接词+主语+谓语构成
常由下面的一些词引导:
②由that引导表示陈述意义that可省略
He says (that) he is at home. 他说他在家里。
③由if , whether引导表示一般疑问意义(带有是否、已否、对否等)
I don’t know if / whether Wei Hua likes fish.
我不知道韦华是否喜欢鱼。
④由连接代词、连接副词(疑问词)引导表示特殊疑问意义
Do you know what he wants to buy? 你知道他想要买什么吗?
⑤从句时态要与主句一致
当主句是一般现在时,从句根据情况使用任何时态
He says (that ) he isat home. 他说他在家里。
I don’t know(that) she is singing now. 我不知道她正在唱歌。
She wants to know if I have finished my homework.
她想要知道我是否已经完成了我的作业。
Do you know when he will be back? 你知道他将会什么时候回来?
当主句是一般过去时,从句应使用过去某时态(一般过去时,
过去进行时,过去将来时,过去完成时)
He said (that) he was at home. 他说他在家里。
I didn’t know that she was singing now. 我不知道她正在唱歌。
She wanted to know if I had finished m homework.
她想要知道我是否已经完成了我的作业。
Did you know when he would be back? 你知道他将会什么时候回来?