不定式的注意事项（接上一期）

　　5. 不定式作宾语补足语时省略to的情况：若不定式前的谓语动词是使役动词make，let，have（表示“让、使”）、感官动词see，watch，look at，observe， notice，hear，listen to， feel时，不定式符号to可以省略。这些动词亦可总结为口诀：“三使五看两听一感觉”。例如：

　　Let's （to）go！走吧！

　　He saw the thief （to）steal a lady’s cellphone.

　　注：改为被动句时要把to还原，例如：

　　The thief was seen to steal a lady’s cellphone.

　　6．不定式的省略。下列短语中，如果意义明确，常常省略到to 。

　　want to , wish to ,hope to , like to , hate to , plan to , try to , love to , have to , ought to , need to , used to , be able to

　　7．不定式作定语，应注意两种关系：

　　1）动宾关系：

　　He has a lot of meeting to attend .

　　Please lend me something to write with .

　　He is looking for a room to live

　　He is looking for a room to live in .

　　He has no money and no place

　　to live ( in ) .

　　I think the best way to travel ( by ) is on foot .

　　There is no time to think ( about ) .

　　2）主谓关系：

　　She is always the last ( person) to speak at the meeting .

　　----I’m going to the post office , for I have a letter to post . ( 逻辑主语是I )

　　-------Thank you. But I have no letters to be posted now ( 逻辑主语不是I )

　　7．不定式作状语，可以有以下几种意义：

　　1） 原因

　　He is lucky to get here on time .

　　这种结构中常用的形容词有：

　　happy , glad , delighted , pleased , sorry , eager , anxious . lucky , fortunate , proud , angry surprised , frightened , disappointed , ready , clever , foolish , worthy

　　2) 目的

　　He came to help me with my maths .

　　3) 结果

　　I hurried to get there only to find him out .

　　The book is too hard for the boy to read .

　　He is old enough to go to school .

　　8 . 不定式作补足语

　　I saw him play in the street just now .

　　能跟不带to 的不定式作补足语的动词有：

　　see , feel , hear , listen to , look at , watch , let , have make, observe, notice

　　注: 当这些词为被动式时，不定式要带to , 如：

　　He was seen to play in the street just now.

　　1. The teacher told them ________ make so much noise.

　　  A. don’t    B. not   C. will not   D. not to

　　本帖隐藏的内容

　　答案：D 老师让他们不要在下面说话，对于动词不定式的否定形式，not要在不定式之前，所以D答案最符合。

　　2. Mrs Smith warned her daughter ________ after drinking.

　　  A. never to drive    B. to never drive

　　  C. never driving     D. never drive

　　本帖隐藏的内容

　　答案：A 史密斯警告她的女儿不要酒后驾车，同前一题一样，不定式的否定词要放在不定式之前，答案为A