2018屆高考英語第一輪語法大全復習教案及配套練習2
i come here only to say good-bye to you. 我來僅僅是向你告別。
2）作結果狀語，可以表示沒有預料到的或事與愿違的結果，不定式要放在句子后面。
i awoke to find my truck gone. 我醒來發現箱子不見了。
he searched the room only to find nothing. 他搜索了房間，沒發現什么。
3） 表原因
i\'m glad to see you. 見到你很高興。
she wept to see the sight. 她一看到這情形就哭了。
4）表示理由和條件
he must be a fool to say so.
you will do well to speak more carefully.
7.8 用作介詞的to
to 可以用作介詞，也可用作不定式的標示。下面的to 都用作介詞：
admit to object to be accustomed to be used to stick to turn to開始
look forward to be devoted to pay attention to contribute to apologize to devote oneself to
7.9 省去to 的動詞不定式
1） 情態動詞 （ 除ought 外） 后。
2） 使役動詞 let, have, make后，感官動詞 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后。
注意：被動語態中不能省去to。例如：
i saw him dance. 我看見他跳舞。
=he was seen to dance.
the boss made them work the whole night. 老板讓他們整夜干活。
=they were made to work the whole night.
3） would rather，had better句型后
4） why… / why no…句型后
5） help 后可帶to，也可不帶to, help sb （to） do sth：
6） but和except后。but前是實義動詞do時，后面出現的不定式不帶to。
比較：he wants to do nothing but go out. 他只想出去玩。
he wants to believe anything but to take the medicine. 除了吃這藥，他什么都信。
7） 由and, or和than連接的兩個不定式，第二個to 可以省去：
8） 通常在discover, imagine, suppose, think等詞后作賓補時，可以省去to be。例如：
he is supposed （to be） nice. 他應該是個好人。
典型例題
1） ---- i usually go there by train.
---- why not ___ by boat for a change?
a. to try going b. trying to go c. to try and go d. try going
答案：d. why not 后面接不帶to 的不定式，因此選d。
2） paul doesn\'t have to be made ___. he always works hard.
a. learn b. to learn c. learned d. learning
答案：b. make后接不帶to 的動詞不定式，當其用于被動時，to 不可省略。
7.10 動詞不定式的否定式
在不定式標志to前加上not。例如：
tell him not to shut the window。讓他別關窗。
she pretended not to see me when i passed by. 我走過的時候，她假裝沒看見。
典型例題
1）mrs. smith warned her daughter ___ after drinking.
a. never to drive b. to never driver c. never driving d. never drive
答案：a。warn sb to do sth. 的否定形式為warn sb not to do sth. 此處用的是否定詞never.
2） the boy wanted to ride his bicycle in the street，but his mother told him ____.