关系代词that、which用法区别：
That: 既可指人又可指物 Which: 只指物，介词后只跟which.
以下几种情况只用that： 1.先行词是all、much、little、something、anything、somebody 等不定代词 Eg. All that glitters isn’t gold. 2.先行词被最高级、序数词、the very、 the only 、the right等修饰 Eg . It is the only game that I like.
1、一般将来时的简单句： If you do it carefully , you will not make mistakes. 2、含有情态动词的句子： If you want to get to the top of the mountain , you must try your best. 3、祈使句： If you fail the exam this time, don’t give up!
if 和whether的区别：
和if相比whether的功能更强大一些 : 1、Whether可以和or not 连用而if不可 Eg. Whether you like English or not, you must learn it. 2、Whether可以用在介词后引导宾语从句而if不可 He is thinking about whether he will attend the meeting.
3.先行词既有人又有物时 Eg .The writer and his works that are famous were reported yesterday.
定语从句的谓语动词在数量上跟先行词保持一致
Thank you !
The days which I spent in the countryside are so unforgettable. I like the house which I lived in 2 years ago. 2、看代实副型： I like the house where I lived 2 years ago. I never forget the school where I studied 4 years ago.
When、as soon as 引导的时间状语从句:
1、When she was five years old , she could play the piano. 2、 As soon as the boy had arrived at school, the bell rang.
条件状语从句的主句类型:
无论主句如何变幻，从句都要用一现。
宾从中陈述语序的判定：
特殊疑问词/if＋陈述句
【主语＋ 助动词＋v./v.ing/pp＋宾语】 ｛
情态动词＋v. ＋宾语
be＋表语
1、Could you tell me who will go to HK tomorrow?
2、Could you tell me whom will he take to HK tomorrow ? 3、Could you tell me what’s wrong with her ?
中考三大从句难点及考点分析
作者：院素云
When、as soon as 引导的条件从句:
1、When I see her , I will give her the letter. If I see her, I will give her the letter. 2、 As soon as she arrives in Beijing , she will telephone her aunt. If she arrives in Beijing , she will telephone her aunt.
条件状语从句和宾语从句相结合考题
I don’t know if she will come here tomorrow. if she comes ,I will go to the concert with her
定语从句中关系代词和关系副词的用法区别：
关系代词：在从句中作主、宾语，指代先行词 关系副词：在从句中