高一英语Predicative Clauses表语从句的用法
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1. The problem is who could do the work
2. My trouble is who (whom) I can turn to.
引导词的用法（五）
which 在引导表语从句时,常充当
__定__语__,表__语_____ 表示 其中哪一个 。如：
I read about it in some book or another,but what I don’t know is which (book) it is.
引导词的用法（七）
当主句的主语为reason,或者是由why 引导的从句时,与它们相关的表语从句用 _th_a_t_来_引__导__,而不能由_b_e_c_a_u_s_e 引导; because 引导表语从句时只能用于 _It_/_T_h_a_t/_T_h_is__is_/_w_a_s__b_ec_a_u_s_e_…_句型中.
2. The question is whether it is worth doing.
引导词的用法（三）
what 在表语从句中充当_主__语_、__宾__语_或__表_语__ 表示_什_么__，__什_么__样_子__，__或_所__…_的__（__人_或__事_）__.
1. The question is what caused theห้องสมุดไป่ตู้accident.
A. because B. why C. that D. Whether 3 .That is ___ they separated.
A. that B. what C. which D. where 4.Jane is no longer ___ she was four years ago.
A. what B. which C. that D. when
recovered from illness.
The reason why he has to go is
that his mother is ill in bed.
引导词的用法（二）
• whether在表语从句中表“是否”,但不 充当句子的成分。if 不能引导表语从 句.如:
1.What the doctor really doubts is whether my mother will recover from the serious disease soon.
Predicative Clauses 表语从句
表语从句的定义：表语从句在复合句中 作主句的表语。表语从句和主语指 同一内容，它对主语进行解释、说 明，使主语的内容具体化。
结构是“主语+系动词+表语从句”。 可以接表语从句的系动词有
be, look, remain, seem等。
连接词：that / whether /as if /as
need of money at that time . 3.He looked as if he was going to cry . 4.That’s why I was late .
引导词的用法（一）
既不充当成
that在表语从句没中有意义
,
又
。
The fact is that he hasn’t yet
引导词的用法（六）
由as if ,as though引导表语从句，表 示好像。句子中的系动词常用look, appear, seem等。
1.It looks as if it was doing to rain. 2.The young man with long hair looks
as if he were a girl.
的意义。 4. 除that, whether外的所有引导
词都须在从句中充当相应的成 分
1. That’s ___ the Party called on us to do. A. why B. what C. how D. that
2. The reason is ___ he is unable to operate the machine.
though 连接代词：who / whom / whose /
which / what 连接副词：when / where / why /
how / because
1.The question is whether we can rely on him. 2.That’s because we were in
名词主语+be+that引起的表语从句
主语名词常常是 表示事实，真理的名词，如：fact, truth 表示看法，观点、问题、麻烦的名词， 如：idea, opinion, belief, view, news,
advice, feeling, suggestion, plan, trouble, question, problem,
This is how he did it.
That is why the brothers wanted to make a bet.
That’s why we’ve given you the letter.
表语从句引导词注意事项
1. that引导表语从句时不能省. 2. if不能引导表语从句. 3.除that外的所有引导词都有自己
2. That mountain is no longer what it used to be .
3. What he told you was what had been discussed at the meeting.
引导词的用法（四）
who 在表语从句中充当 主__语_、__宾__语_或__表_语___表示_谁___.
1.The reason why I was late was that I missed the train.
2. I was late. It/That/This was because I missed the train.
引导词的用法（八）
当表语从句中主语、宾语、表语具备， 但是还是要表示疑问含义，可以判断句 子中缺少状语，常常用相应的特殊疑问 词引导，有why, when, where, how等
2. My trouble is who (whom) I can turn to.
引导词的用法（五）
which 在引导表语从句时,常充当
__定__语__,表__语_____ 表示 其中哪一个 。如：
I read about it in some book or another,but what I don’t know is which (book) it is.
引导词的用法（七）
当主句的主语为reason,或者是由why 引导的从句时,与它们相关的表语从句用 _th_a_t_来_引__导__,而不能由_b_e_c_a_u_s_e 引导; because 引导表语从句时只能用于 _It_/_T_h_a_t/_T_h_is__is_/_w_a_s__b_ec_a_u_s_e_…_句型中.
2. The question is whether it is worth doing.
引导词的用法（三）
what 在表语从句中充当_主__语_、__宾__语_或__表_语__ 表示_什_么__，__什_么__样_子__，__或_所__…_的__（__人_或__事_）__.
1. The question is what caused theห้องสมุดไป่ตู้accident.
A. because B. why C. that D. Whether 3 .That is ___ they separated.
A. that B. what C. which D. where 4.Jane is no longer ___ she was four years ago.
A. what B. which C. that D. when
recovered from illness.
The reason why he has to go is
that his mother is ill in bed.
引导词的用法（二）
• whether在表语从句中表“是否”,但不 充当句子的成分。if 不能引导表语从 句.如:
1.What the doctor really doubts is whether my mother will recover from the serious disease soon.
Predicative Clauses 表语从句
表语从句的定义：表语从句在复合句中 作主句的表语。表语从句和主语指 同一内容，它对主语进行解释、说 明，使主语的内容具体化。
结构是“主语+系动词+表语从句”。 可以接表语从句的系动词有
be, look, remain, seem等。
连接词：that / whether /as if /as
need of money at that time . 3.He looked as if he was going to cry . 4.That’s why I was late .
引导词的用法（一）
既不充当成
that在表语从句没中有意义
,
又
。
The fact is that he hasn’t yet
引导词的用法（六）
由as if ,as though引导表语从句，表 示好像。句子中的系动词常用look, appear, seem等。
1.It looks as if it was doing to rain. 2.The young man with long hair looks
as if he were a girl.
的意义。 4. 除that, whether外的所有引导
词都须在从句中充当相应的成 分
1. That’s ___ the Party called on us to do. A. why B. what C. how D. that
2. The reason is ___ he is unable to operate the machine.
though 连接代词：who / whom / whose /
which / what 连接副词：when / where / why /
how / because
1.The question is whether we can rely on him. 2.That’s because we were in
名词主语+be+that引起的表语从句
主语名词常常是 表示事实，真理的名词，如：fact, truth 表示看法，观点、问题、麻烦的名词， 如：idea, opinion, belief, view, news,
advice, feeling, suggestion, plan, trouble, question, problem,
This is how he did it.
That is why the brothers wanted to make a bet.
That’s why we’ve given you the letter.
表语从句引导词注意事项
1. that引导表语从句时不能省. 2. if不能引导表语从句. 3.除that外的所有引导词都有自己
2. That mountain is no longer what it used to be .
3. What he told you was what had been discussed at the meeting.
引导词的用法（四）
who 在表语从句中充当 主__语_、__宾__语_或__表_语___表示_谁___.
1.The reason why I was late was that I missed the train.
2. I was late. It/That/This was because I missed the train.
引导词的用法（八）
当表语从句中主语、宾语、表语具备， 但是还是要表示疑问含义，可以判断句 子中缺少状语，常常用相应的特殊疑问 词引导，有why, when, where, how等