The Summary Of Grammar
The attributive clause（定语从句）
定语从句做题步骤
1.判断句子是否为定语从句 2.若句子是定语从句，找到先行词，判断是人还是 物 3.分析句子是否缺少成分，然后选择关系代词或关 系副词 4.介词加which就相当于某些关系副词 5.What 一定不能用于定语从句中
That 在名词性从句中不充当任何句子成分，只起连接作用， 引导主语从句时常用it作形式主语；引导宾语从句时，常 被省略。 e.g. That she will refuse the offer seems unlikely.
只用whether不用if的场合
1.引导主语从句且置于句首时 e.g. Whether he will go there or not is not clear. 2.引导表语从句时 e.g. The problem is whether the TV play is worth watching. 3.引导同位语从句时 e.g. The news whether our team has won the match is unknown. 4.引导宾语从句，前置，同时又作介词的宾语从句时 e.g. We are interested in whether he will agree with us or not.
Noun clause(名词性从句)
名词性从句做题步骤
1.判断句子是否为名词性从句
2.若句子为名词性从句再判断是哪一种名词性从句 3.要分析该句是否缺少什么成分也就是说所选的连 接词除了引导名词性从句外是否要在该从句中充 当什么成分 4.要特别注意同位语从句(which不能引导同位语从 句)
名词性从句的种类
Way 和Time 后的定语从句
当way作为先行词且意为“方法， 方式”时
关系词可以是that, in which 或省略
当先行词是time 时
Time表示“次数”时关系词用that, that可省略 Time表示“时间”时关系词用when或介词加which
The same as 侧重于相似性
The same that 侧重于同一性 遇到point 和 situation 时关系词通常用where
只用who不用that的场合
1.先行词是指人的不定代词时，如one, anyone, no one, all, nobody, anybody, none, those, people等 e.g. People all like those who have good manners. 2.当先行词有较长的后置定语时 e.g. Professor Smith is coming soon who will give us a lecture on how to learn English. 3.当先行词是一个限定性的表示人的特定名词时 e.g. The aunt who came to see us last week is my father’s younger sister.
关系词
关系词 who Whom That Which Whose When Where why 先行词 人 人 人或物 物 人或物 时间 地点用which的场合
1.先行词前有序数词或形容词最高级修饰时 e.g. This is the most interesting film that I’ve ever seen. 2.当先行词是不定代词时，如all, little, few, much, something, anything, everything, none, nothing, no one, some等 e.g. He did everything that he could to help us. 3.先行词被all, every, no, some, any, little, much, one of, the only, the very, the right, last, few, just, still等修饰时 e.g. The only thing that we do is to give you some advice. 4.当先行词既有人又有物时 e.g. My father and my mum talked for about half an hour of things and persons that they remembered in the school.
1.主语从句
2.表语从句 3.宾语从句
4.同位语从句☆☆(能跟同位语从句的通常是抽象名 词，如news, idea, report, belief, fact, doubt, hope,information…)
What 和 that在名词性从句中的区别
What在名词性从句中可充当主语，宾语和表语，相当于the thing that e.g. What the teacher said was very valuable.
只用which不用that的场合
1.关系代词前有介词时 e.g. He built a house through which he could study the sky. 2.引导非限定性定语从句时 e.g. Football, which is a very interesting game, is played all over the world. 3.先行词本身是that时 e.g. What’s that which flashed in the sky just now. 4.先行词后有插入语时 e.g. Here is the English grammar book which, as I’ve told you, will help improve your English.
5.当主句是以who或which开始的特殊疑问句时 e.g. Who is the boy that won the gold medal. 6.有两个定语从句时，其中一个关系代词已用which，另一个宜用that e.g. They built up a small factory, which produced things that could cause pollution. 7.当先行词前有such或the same修饰，先行词和关系代词指同一物时 e.g. She is wearing the same dress that she wore yesterday.