（宾语从句）
“which”---“哪---”、作定语、起连接作用
1、Which class is suitable for us isn’t most
important .
（主语从句）
2、What he wants to ask you now is which team
won the game .
（主语从句）
2、The thing I am anxious about is whom he will turn
to for help .
（表语从句）
3、His mother asked him whom he could believe in .
（宾语从句）
“what”---“事情”、作主表宾语、起连接作用
“how”----- “如何”、作状语、起连接作用
“when”-- “什么时候”、作状语、起连接作用
1、When the meeting will begin isn’t decided now .
（主语从句）
2、The trouble is when he could recover from the
（表语从句）
3、You could choose whichever book you want .
（宾语从句）
名词性从句引导词的用法（4）：
“when”-- “什么时候”、作状语、起连接作用
连接副词
“where”-- “什么地方”、作状语、起连接作用 “why”---- “为什么”、作状语、起连接作用
hand .
（表语从句）
3、I want to know whose suggestion is more
practical .
（宾语从句）
名词性从句引导词的用法（3）：
连接代词
“whoever”-- “-----的任何人”、作主语、 “whomever”-- “-----的任何人”、作宾语、 “whatever”-- “----的任何东西”、作主表宾语、 “whichever”--- “无论哪个或哪些---”、作定语、
（表语从句）
3、You should appreciate whoever helped you in
the past .
（宾语从句）
“whomever”--- “---的任何人”、作宾语、起连接作用
1、Whomever you will meet in the meeting is
excellent .
1、Whatever you did in the past was very meaningful .
（主语从句）
2、What we should do is whatever is worth doing .
（表语从句）
3、We should do whatever is worth doing .
(同位语)
1、主语从句 ( subject clause )
分类
2、表语从句 ( predicative clause ) 3、宾语从句 ( object clause )
4、同位语从句 ( appositive clause )
引导词
从属连词（3个）：that 、if、 whether
连接代词 （9个）：who、 whom 、 what、 which、 whose、 whoever whomever、 whatever、 whichever、
（表语从句）
3、Could you tell me which one is right .
（宾语从句）
“whose”---“谁的”、作定语、起连接作用
1、Whose bag was the most beautiful is still
unknown now .
（主语从句）
2、The question is whose friends could lend me a
（宾语从句）
“whichever”-- “--的哪些或哪个”、作主、表、宾语、
1、Whichever team win the game is possible .
（主语从句）
2、The fact is whichever teacher could help you
learn English well .
2、The trouble is who could lend me some money .
（表语从句）
3、He want to know who picked up his mobile phone .
（宾语从句）
“whom”---“谁”、作宾语、起连接作用
1、Whom you will learn from is worth thinking over .
disease .
（表语从句）
3、He asked us when we would graduate from the
school .
（宾语从句）
“where”-- “什么地方”、作状语、起连接作用
1、Where I could buy the book is uncertain now .
（主语从句）
4、Could you tell me the question whether English is
useful for us now（. 同位语从句）
If与whether的区别：
If 只能引导两种名词性从句：宾语从句、不放于句首 的主语从句。Whether四种从句均可以引导。
请思考：
1、Whether she will come back on time depends on weather . 2、I asked him whether he could do me a favor .
1、What I desire to get is a good reputation .
（主语从句）
2、What he will tell me is what I have been expecting
to know .
（表语从句）
3、They agree with what I said just now .
3. We’re worried about w__h_e__th__e_r he is safe. 4. I don’t know _w_h__e_t_h_e_r_/_i_f he is well or not. 5. I don’t know _w_h__e_t_h_e_r or not he is well. 6. The question is _w__h_e_t_h_e_r_ he should do it.
请用if / whether填空：
1、I asked heri_f/__w_h__e_t_h_e_r she had a bike. 2._W__h__e_ther we will hold a party in the open air
tomorrow depends on the weather.
1、It depends on weather if she will come back on time .
2、I asked him if he could do me a favor .
If与whether的区别：
1、If不能引导放于句首的主语从句，而whether可以。 2、引导表语从句用whether，不用if。 3、引导同位语从句用whether，不用if。 4、whether可以引导从句作介词的宾语，不用if 。 5、whether or not 连在一起可以，但if不可以。而 “whether-----or not = if -----or not”
1、English is very useful for us . 2、The subject I am interested in is English. 3、We need to master English well. 4、He want to learn the language , English .
连接副词（4个）：when、 why、 where、 how
名词性从句引导词的用法（1）：
从句中的每一个引导词都有3个份、起连接作用
从属连词
“if”--- “是否”、不作成份、起连接作用
“whether”---“是否”、不作成份、起连接作 用
“that”---无词义、不作成份、起连接作用
4、He heard the news that Liuxiang set a new world
record .（同位语从句）
说出从句部分及类别并翻译：
1、My idea is that we should do it right now.
表语从句
2、She won’t believe that he has become a thief.
“whoever”-- “---的任何人”、作主语、起连接作用
1、Whoever could solve the problem will be
rewarded .
（主语从句）
2、The person I will praise is whoever could work
out the question .
1、That we will realize our dreams in the future is
certain （. 主语从句）
2、The fact is that Beijing will hold 29th Olympic
Games this year.（表语从句） 3、I know that well begun is half done（. 宾语从句）