冀教版九年级全一册英语Grammar跟读

Grammar

语法

情态动词（Modal Verbs)

在八年级上册, 我们已经对情态动词may, might, will, would的用法进行了归纳。can, could, need, should, must也是常见的情态动词, 现就其用法归纳总结如下：

1. can/could能, 可能, 可以（can多用于指现在或将来, could多用于指过去)

1) 表示能力, 相当于be able to。 例如： I can make noodles myself. Sorry, I can't follow you. Please say that again. Can people prevent certain accidents? The girl could speak English when she was a child. The street was icy - the car couldn't stop in time. How could the man pull a train with his teeth!

2) 表示可能。例如： Smoking can cause diseases of the lungs. Some of the disadvantages can become real problems if we don't take care. This could be a class project! can/could用在否定句和疑问句中多表示猜测。例如: The boy can't be so careless. There is someone outside. Who can it be? It couldn't be true. Could it be Brian? Where could Danny be at that time?

3) 表示允许。例如: Can I speak to Jenny? Can you send me a photo of yourself? You can go. could代替can. 语气显得更加委婉。例如： Could you open the door for me, please? Could you speak more loudly? Could I help you?

2. should 应当, 应该

1) 表示劝告、建议。例如： We should go to the hospital right now. As a student, you should never smoke. You shouldn't be so careless.

2) 表示征求同意或征询意见, 用于主语为第一人称的疑问句。例如： Should I open the window? When should we have the meeting? What should I do to be a polite guest?

3. need必要, 需要（作情态动词时只用于否定句和疑问句) 1) 用在否定句中。例如： Danny, you needn't get up so early. We needn't worry about him. 2) 用在疑问句中, 肯定回答一般用must, 否定回答一殷用need not。例如： 一Need we cat foods from each food group? 一Yes, you must. 一Need the guests leave the place right away? 一No, they needn't.

注意： need在肯定句中通常用作实义动词, 有人称和数的变化。例如： He needs to take an X-ray.

4. must必须, 应该 1) 表示必须。例如： In a poem, every word must have power and meaning. We must do everything carefully. 2) 在否定句中表示不许。例如： Cars mustn't be parked here. You mustn't lend the book to others. 3) 表示推测, 用在肯定句中, 意为“一定”, “准是”。例如： You must be tired after the long walk. He thought it must be the king's musicians passing by.

注意： 回答带有must的一般疑问句时, 否定回答常用need not, 而不用must not。例如： 一Must the students be back by four o'clock? 一Yes, they must. (No, they needn't. )

状语从句(Adverbial Clause)

到目前为止, 我们学习了because, when, before, afier, as, if, although等连词引导的状语从句。现在归纳总结如下：

原因状语从句

连词

示例

because (因为, 由于)

People call them Kiwis because they make the sound: keee-weee. The kitchen is dangerous because there are many glass abjects.

人们管它们叫几维鸟, 因为它们会发出叽唯的声音。 厨房很危险, 因为有很多玻璃制品。

时间状语从句

连词

示例

when（当……时候)

When she was nineteen months old, Helen fell ill.

海伦在19个月大的时候病倒了。

before（在……以前)

Every night, he reads for half an hour before he goes to sleep.

每晚, 他都会在睡前看半个小时书。

after（在……以后)

After Einstein finished school, he went on to study physics in Switzerland.

爱因斯坦毕业后, 去瑞士深造物理了。

as（一边……一边; 当……时候; 随着)

I thought about it as I walked to school and later as I walked home. Jane cheers as her son runs and kicks the ball. As Helen grew older, she made a lot of progress and lcarned to read.

我在上学和回家的路上一边走一边思索着。 简在儿子奔跑踢球的时候欢呼着。 随着海伦长大, 她取得了很大的进步, 学会了阅读。

while（和……同时)

I listened to music while she worked.

她在工作的时候我在听音乐。

其他状语从句

连词

从句类型

示例

if（如果)

条件状语从句

If you are outside, get to an open area as fast as you can.

如果你在室外, 尽快跑到一个空旷的场地。

(al) though（虽然)

让步状语从句

Although I have lived in Canada for a long time, I still don't feel Canadian.

虽然我在加拿大生活了很久, 但仍然感觉自己不是加拿大人。

so that（以便)