牛津初中英语 八下 8B Unit4 Grammar 课件

“疑问词+动词不定式” 结构可以改写 成由该疑问词引导的从句。 e.g. I don’t know what to do.
= I do not know what I should do.
我不知道该做什么。
注意：所有疑问句中，只有why不可以
与动词不定式连用。
Amy and Daniel are talking about their Reading Week. Complete their conversation. Use the correct question words and to-infinitives.
We can also use an adjective like sure or
clear before a question word.
e.g. Suzy was not sure who to ask for help. Are you clear when to meet at the gate tomorrow?
understand,
e.g. Mr Wu advised us which to choose as after-school activities. The students asked their teacher when to hand in their work. Millie showed us what to do next. Daniel taught himself how to use a computer to draw. Don’t forget to tell your mum where to meet you.
Amy: You can try our school library or Sunshine Library. Oh, did you know Peter is reading Around the World in Eighty Days? He wants to find out (3) ____________ how to travel around the world in such a short time. Daniel: Wow, that’s amazing! By the way, when to hand in can you tell me (4)______________ our book report?
Amy: Before next Friday. I’m still not to write about in the sure (5) what _________________ report. Daniel: You can write anything about your book – what the book is about, what you think of it and so on. You should read some reviews about the book before writing.
Amy: Thank you. Anyway, I know (6) ______________ who to ask for help with writing. Mr Wu is always there to help us.
We use must and have to to say that
hand v.
hand in
交；递，给
上交，递交
review n.
评论
return v.
归还
on time准时
renew v.
续借；更新
Andy doesn't know ____________. what to wear
which book to buy Millie can’t decide _________________.
All question words can be used in this
way, except why.
× Suzy will explain why to recommend this book. √ Suzy will explain why she recommend this book.
We can use a verb + object before a question word with a to-infinitive. advise, ask, say, decide, know, show, discuss learn teach wonder
find out, forget, remember, think,
e.g. We do not have to go to school at
weekends.
must 表主观的义务和必要，主要用于肯 定句和疑问句，“必须，得，要”。 e.g. You must finish your homework today. 你今天必须完成家庭作业。 must 的否定形式must not表示禁止， “不能，不行”。 e.g. You must not smoke here. 你不能在这里抽烟。
Translation.
1. 撞到岩石上 crash against the rocks
2. 筋疲力尽 4. 摔倒
be tired out fall over
3. 与…一样大 the same size as 5. 向某人大叫 shout at sb.
6. 继续做某事 continue to do sth. /
14. 他只有我的小手指那么大。 He was the same size as my little finger. 15. 这噪音使他们都摔倒了。 The noise made them all fall over. 16. 他们继续在我的身上走来走去。 They continue moving across my body. 17. 我也不知道说什么。 I did not know what to say either.
how, what, ask for, find when, where, hand in, read which, who, speak, travel, write about
Amy: Mr Wu has recommended so many interesting books. Have you decided (1) ____________ which to read first, Daniel? Daniel: Yes. I want to read Black Beauty first. But I don’t know (2) ___________ where to find the book.
how to go to the station. They don’t know _________
We can use a question word with a toinfinitive after a verb. e.g. Millie has decided what to read. Daniel did not say who to talk to about this book. Simon forgot when to meet his friends. Kitty cannot decide which to choose first. Sandy is wondering where to ask for help. Amy does not know how to write the report.
it is necessary to do something.
We use must when the speaker feels that
something is necessary.
e.g. “I must run away from them,”
Gulliver thought.
We use have to when the situation makes something necessary. e.g. I have to use them to reach the box on the fridge. She has to take her daughter from school in the afternoon.
have to 表一种客观的需要，“不得不”。 have to 有人称和数的变化。 e.g. It is getting dark. He has to go home now. 天快黑了，你现在得回家了。 have to 的否定形式do not have to, 相当于 need not 。 e.g. They do not have to buy a computer at the moment. 他们目前没有必要买电脑。
疑问词+动词不定式做动词的宾语。疑 问词也包括疑问代词what, which, who和 疑问副词how, when, where。常和此结 构连用的动词及动词短语有：know, learn, see, hear, ask, tell, decide, explain, find out, forget, remember, understand 等。
We use must not to say that something is
not allowed.
e.g. You must not smoke in the library.
We use do not have to to say that it is not
necessห้องสมุดไป่ตู้ry to do something.
e.g. I don’t know what to say next.
我不知道接下来该说什么。