本周呢柠檬茶学习了一个新的语法。当然在老师讲之前自己做关于非限制性定语从句的题目，我的内心其实是崩溃的！【内心戏:这是什么鬼？！╭(°A°`)╮】然后经过一堂课的学习，终于理清楚了，什么时候该用什么关系代词。下面就跟随柠檬茶来理一理那些调皮的关系代词。【感谢学校的讲义】

♢ 一、as和which
首先看例句:
♣a.He seems not to have grasped what I meant ，which greatly upsets me.
♣b.Can you solve such problems as were raised by the audience?
♣c.As was pointed out ,this kind of substance is poisonous.

♧关于as 和 which

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(3)【因为很重要所以打下来】在以下结构中，一般也用as:as (it) appears， as (it) thinks likely，as (it) often happens，as (it) was pointed out / said / reported/announced，as (it) was said earlier，as I remember， as is well known， as is known to all， as anybody can see， as is the case with等。如例句c☆【注意】
当先行词，由the same修饰时，也用that引导定语从句,但是和as所引导的意思不同:that表示一个,as表示同一类。

♢二、“介词+关系代词”引导的定语从句

95'

♢三、定语从句与其他从句的区别
看例句，找规律( •̀∀•́ )
♣a.He is such a good boy that everyone likes him.
♣b.He is such a good boy as everyone likes.

♧规则一:区别such..as.../so...as...引导的定语从句和such/so...that...引导的结果状语从句，如果从句缺少主语和宾语就是定语从句，连接词用as，如例句b;如果从句的结构完整，就是结果状语从句，连接词that，如例句a。
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♣a.He said nothing that might be angry.
♣b.He said nothing， which made me angry.
♣c.He said nothing and that made me angry

♤规则二:区别限定性定语从句，非限定性定语从句与并列句
a为限定性定语从句，先行词是nothing，所以关系代词用that;b定语从句与主句之间用关系词连接;c为并列句用并列连词and连接。
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♣a.The news that he told me was shocking
♣b.News came that our class had won the game.
♣c.As is known to all , the moon travels around the earth.
♣d.It is known to all that the moon travels around the earth.
♣e.What is known to all is that the most troublesome around the earth.
♣f.He couldn't explain to the police how he had got the money.

♡规则三:定语从句与名词性从句
定语从句中，关系代词在从句中作主语、宾语、表语，如a;而名词性从句中的连词that在从句中不做任何成分，如b;c句是限定性定语从句，d是主语从句，it为形式主语，e是主语从句＋表语从句。疑问代词what及疑问副词how可连接名词性从句，但不能引导定语从句，如e和f。
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♣a.When you read the book , you'd better make a mark in the place where you have any questions.
♣b.When you read the book , you'd better make a mark where you have any questions.

♢规则四:定语从句与地点状语从句
关系副词引导定语从句时，其前面必须有时间、地点、原因等先行词，如a;而疑问副词连接状语从句时，其前面没有，如b。
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♣a.It was a small village that which we know from my father.
♣b.It was in this small village that we got to know each other.
♣c.It was such a small village that there were no more than eight hundred people in the village.

☆规则五:定语从句与强调句，状语从句
that在定语从句中作主语、宾语、表语，如a;
而强调句型中不做任何成分，但不能省，如b;
在结果状语从句中that也只起连接作用，在从句中不充当任何成分。


关于非限制性定语从句的语法，小柠檬茶就介绍到这里啦。

敬请期待下期☞那些学习反义疑问句的日子☜