2、在某些状语从句中,从句的主语与主句的主语一致时,可省去主语+be部分
(1) When (he was) still a boy of 10, he had to work day and night.
(2) She tried her best though (she was) rather poor in health.
(3) If (you are) asked you may come in.
(4) If (it is) necessary Ill explain to you again.
3、不定式符号to的省略
(1) 并列的不定式可省去后面的 to.
I told him to sit down and wait for a moment.
(2) help 当帮助讲时,后面的宾语或宾补的不定式符号to可带可不带.
I will help (to) do it for you.
I will help you (to) do it.
(3)介词but前若有动词do,后面的不定式不带 to.
The boy did nothing but play.
(4) 某些使役动词(let, make, have)及感官动词(see, watch, hear, notice, observe, feel, look at, listen to等)后面作宾语补足语的不定式一定要省去 to, 但在被动语态中须将to 复原。
I saw the boy fall from the tree.
The boy was seen to fall from the tree.
The boss made us work 12 hours a day.
We were made to work 12 hours a day.
(5) 主语从句中有动词do,后面作表语的不定式的 to可带可不带。
【高中英语语法 省略】相关文章:
最新
2016-02-29
2016-02-29
2016-02-29
2016-02-29
2016-02-29
2016-02-29