what和that的用法区别

B All
C Anything D All what
3. A computer is so useful a machine
___C___ we can use everywhere.
A that B which C as D what 4（2005天津卷）last month， part of
Southeast Asia was struck by floods，
那几个that 可以省略？为什么？
Leabharlann Baidu
that 关系代词 引导定语从句 没有字面意义 充当句子成分 作宾语可以省略
引导名词性从句
that
不充当 句子成分
主语从句 宾语从句 表语从句 同位语从句
what
充当 句子成分
引导定语从句
也可以把what看成在主句 和从句里都充当句子成分，
that PK what 即兼语式。
Only then did I recognize w__h_a_t silly mistakes I had made. (3) 具有关系代词性质的what: 意为“所…的”. 相当于”
the＋名词＋that”或者all that, 即好像是既包括了先行词也包含了
关系代词，因此，有学者称之为关系代词型what。如：
What 分别引导什么从句?
what永远不能省略！
what从属连词 引导_名_词__性_从句 _充_当___句子成分 _有_/_没_有_字面意义
主语从句 表语从句 宾语从句 同位语从句 ?
“动词+的”
什么
结构
1 You must do everything _th_a_t_ I do. 2 Is there any question t_h_a_t_ troubles you much ? 3 James is the best singert_h_a_t_ I have ever known. 4 They were talking about the people and places _t_h_a_t they had visited. 5 Which is the book t_h_a_t_ he borrowed from the library ? 6 Who is the person _t_h_a_t is talking to our headmaster? 7 My hometown is no longer the village _th_a_t_ it used to be.
that—从属连词
主语从句 宾语从句
引导_名_词__性_从__句___， 表语从句
_不_充__当__句子成分， 同位语从句
_没_有____字面意义。
引导宾语从句的 that可以省略
1 _W__h_a_the had hoped at last came true. 2 China is no longer _w_h_a_t_ it used to be. 3 I’m sorry for _w_h_a_t_ I said. 4 That’s _w_h_a_t_ I want to know. 5 It was _w_h_a_t_ he meant rather than w__h_a_t he said. 6 There’s something in _w_h_a_t_ he says. 7 200 years ago, they came to _w__h_a_t we call “America” now.
seemed to be a long time, he came up again.
1 _T_h_a_t_ she lacks experience is obvious. 2 The police learned _t_h_a_t _ he wasn’t there at that time. 3 He realized _th_a_t__ she too was tired. 4 My idea is _t_h_a_t you shouldn’t have left the country. 5 Bob has the mistaken idea _th_a_t_tomorrow is a holiday. 6 It was quite plain _t_h_a_t_ he didn’t want to come. 7 It is natural _t_h_a_t_ they should have different views.
refer to？
——Right， just the one __C___ you
know I used to work for years.
A that B which C where D what
2. __A__ should be done must be done
in time.
A What
W__h_a_t (=The thing that) happened after that was interesting.
China is not _w_h_a_t(=the China that) used to be. The boy dived into water and after w__h_a_t (the time that)
that Vs what
复合句式重难点 what和that的用法区别
what引导名词性从句在从句中作主语、宾语、表语或定语
(1) 具有疑问代词性质的what: 意为“什么,什么样的”.如：主宾表以及定语
I don't knoww__h_a_t he needs. (2) 在名词前表示感叹的what：意为“多么”。如：
that前通常会有一个名词或代词,即先
行词。what则包括了先行词和that. 辨
What he said was true.
析
The words that
I enjoy all that is going on.
what
Practice makes perfect!
1. ——Is that the small town you often