英语基础-从句

1、从旬（一）名词性从句.名词性从句有四种：主语从句： 句子做主语 What he said is right.宾语从句： 句子做宾语 I think that he is honest.表语从句： 句子做表语 My advice is that we should set out 同位语从句： 句子做同位语 The news that our team won is right.名词性从句的引导词：所有的疑问词及其疑问代词+ ever构成的词； that； if/whethero除了在宾语从句中的that可以省略外，其他引导 词都不能省略. AThe city is not it used to

2、 be. A what B that C which D whyA代er seemed a long time, it was his turn to see the doctor.A that B it C what D whichAPerservance is a kind of quality and thats it takes to do anythingwell. A what B that C which D why 是否填what应具备的条件：what引导的名词短语在整个句子是否做成分（即做主语，宾语，或 表语）在what引导名词短语中what是否做成分（即做主语，宾语，或表

3、语，定语）注：what引导的名词短语一般译为：的东西（的人；的地方等）（二）定语从句.什么是先行词：在定语从句中被修饰的名词或代词是先行词。.关系词包括哪两种：关系代词和关系副词。.关系词在什么情况下可以省略：先行词在定语从句中做宾语的时候可以省略。.关系词在定语从句中有什么汉语意思？关系词在定语从句中没有汉语意思。.怎样把先行词放入定语从句中当是关系代词时把先行词放在关系词后面的句子中的适当的位置（主语，宾语，或表语的位置）Is this the photo that you took last summer?一You took the photo last summer.当关系代词是who

4、se时Whose +n.改为先彳亍词s +n.把先行词s +n.放在后面这个句子中的适当位置。（主语，宾语，或表语的位置）It was an island whose name I have forgotten .f I have forgotten the islands name.介词+关系代词时介词+关系代词改为介词+先行词把介词+先行词局部放在后面这个句子中的适当位置。The man with whom she was traveling is her boyfriend.f she was traveling with the man.复杂介词+关系代词时复杂介词+关系代词改为复杂介词+先行词把复杂介词+先行词局部放在后面这个句子中的适当位置。He has five sons, 3 of whom are teachers.f 3 of five sons are teachers.当是关系副词时把先行词放入关系副词后面这个句子中的适当位置，同时在先行词前面加适当的介词This is the room where I lived.f I lived in the room.如何确定用关系代词还是关系副词：领先行词放在定语从句中要做主语，宾语，或表语时，要用