I、简单句中的省略
The meeting(being)over，we all left the room.
Tools(having been)carried，we went on our way to the fields.
2、从句中的省略
(1)宾语从句中的省略：
1)以“which/where/when/how/why”等引起的宾语从句，在其谓语动词与主句谓语动词相同时，其后的主语和谓语可全部省略，而仅保留一个"wh-"词。
She can’t come，but 1 wonder why(she can’t come).
He will be back，I don’t know when(he will be back).
2)在“I’m afraid，I believe，I expect，I fancy，I fear，I hope，I imagine，I should，I should say，I suppose，I think，I trust”之后的"not"等于一个否定的"that"从句，“so”等于一个肯定的"that"从句。
“Is he sick”一“I am afraid so.”(=I am afraid that he is sick.)
(2)定语从句中的省略：
定语从句中可以省略作宾语的关系代词that。在非正式文体中，关系副词“when/why也可以省略，关系代词后面的主谓结构有时也可以省略。
I shall never forget the day (when) we first met,
He gave the same answer as (he had given)before.
I like the place for the very reason(why)you dislike it.
(3)状语从句中的省略：
1)在时间、地点、让步、方式、条件状语从句中，如果从句的主语与主句的主语一致，或者从句的主语是“it” ,则从句中的动词“be”及其主语可以省略。
Any progress，however small (it may be)，is important.
Change the form of the verbs where(it is)possible/necessary.
His opinion，whether(it is)fight or wrong，would be considered.
