特殊疑问词+to

1. 我们可以用“疑问词+动词不定式”结构做动词的宾语。疑问词包括疑问代词what 、which、who和

疑问副词how 、when、where 等。但所有疑问词中，只有why不可以和动词不定式连用。

2. 常和“疑问词+动词不定式”结构连用的动词及短语有：know、learn、see、hear、ask、tell、advise、decide、explain、find out.

另外，“疑问词+动词不定式”结构前，有时也可以是 sure 、clear 等的形容词

翻译：(1)我不知道该做什么。I don’t know what to do.

(2)你怎么知道在那里可以找到我How did you know where to find me

(3)我不确定下面该做什么。I am not sure what to do next.

3.注意：

（1）有些动词，如advise, ask, show, teach, tell等，其后可以接双宾语。（2）有些疑问词，如what, which, whose, how many, how much等，其后先接一个名词再接动词不定式。

（3）“疑问词+动词不定式”结构在句子中可以做主语和表语。

（4）“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。

练习：

（1）Sandy 问我怎样去那。Sandy asks me how to go there.

（2）他不知道该带多少钱。He doesn’t know how much money to take.（3）何时开始是一个问题。When to start is a question.

（4）我的问题是在哪里可以找到答案。My question is where to find the answer.

一、单项选择

（）1. —I will go to Harbin for my summer vacation. What about you —I haven’t decided where ______.

A. go

B. went

C. going

D. to go

（）2. I haven’t deci ded when _____a holiday yet.

A. took

B. taking

C. to take

D. take

（）3.—Can I help you ,dear

—Yeah, I do not know_____ a banana milk shake. Maybe you can help me.

A. what to do

B. when to make

C. how to make

D. why to do

二、句型转换(同义句转换）

1. He showed me how I can start the online tour.

She showed me the online tour.

2. I don’t know what he said.

I don’t know _______ ______ _______.

3. Tom forgot when he met his friends

Tom forgot _____ ______ ______his friends.

4. Sandy is wondering where she asks for help.

Sandy is wondering _______ ________ ________ for help.

5. Amy does not know how she writes the report.

Amy does not know _____ _______ _______ the report