十三。 主从复合句。
名词性从句几点注意事项：
1名词性从句一律用正常语序。
i don’t know when he will come.
that is what i want to tell you.
2that在主语，表语，同位语从句中不可省略。
that he was right was quite clear.
the hope that he may recover still exists.
3表语从句的三个句型。
he failed to meet the important customer that day.（表结果）
he was caught in a traffic accident.(表原因)
he failed to meet the important customer that day. the reason was that he was caught in a traffic accident.
he was caught in a traffic accident. that was why he failed to meet the important customer that day.
he failed to meet the important customer that day. it was because he was caught in a traffic accident.
4that 引导同位语从句与定语从句的区别：
同位语从句是对中心词内容作进一步解释和说明，that在从句中不作任何成分，且不能省略。
而that引导的定语从句是对名词的限定，that 作为关系代词，在从句中充当主语，宾语（可以省略），或表语。
the news that they had won the game soon spread over the whole school.
the news that you told me yesterday was really disappointing.
5代词+ever与副词+ever引导的从句。
一） 代词+ever既可以引导名词性从句也可以引导状语从句。
1） 引导名词性从句=先行词+that
whowhatever=anything that
whoever=anyone who
注意：whichever 和whatever 不但可以引导名词性从句，而且本身还可以用作名词在句中做主语或宾语，或用作形容词，在句中担任定语。
you may take __book you like.
a. which bonly c. what d. whichever
eat whatever food you like.=eat any food that you like.
read whichever story you find most interesting.
2)引导状语从句。
whatever=no matter what
whoever=no matter who
二） 副词+ever只能引导状语从句=no matter+副词。
辨别名词性从句和状语从句。
you can eat whatever you like.
whoever says that is a liar.
whoever wants to speak to me on the phone, tell them i’m busy.
whichever you buy, there’s a six-month guarantee.
whenever you h**e trouble, please ask me for help.
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