从句的省略（阅读）

1.动词后的宾语从句如果是that引导，that可省

convince/inform若空后有sb.，则为主动，convincing/informing，若空后无sb.，是of或that从句，则为被动，convinced/informed

2.定语从句

关系代词作定语从句的宾语时，关系代词可省。代词/名词后有一个缺失宾语的简单句

n.（先行词）+n.（定语从句主语）
n.+代词主格
代词+n.
代词+代词主格

have

have sb. do sth.----sb. be had to do sth.
don't have sb. doing sth.，不允许某人做某事
have sth. done
have a role to play
have a toy to play with
to do+prep.
The day we were looking forward to came at last.
The house(n.) we(代词) used to live(vi.) in(创造缺宾语的环境) has been pulled down.

3.so/such...as+缺失主语或宾语或表语的简单句

so/such...that+主干完整的简单句
so/such...as to be+n.短语/adj.
the same... as+缺失主语或宾语或表语的简单句