It is …which 句型怎么用？

It is …which 句型怎么用？

It is 后面加表示物的名词，which是关系代词，后面接定语从句修饰前面的名词。如：
　　It is a book which was writen by Lu xun。 这是鲁迅写的一本书。
　　which 英 [wɪtʃ] 美 [hwɪtʃ,wɪtʃ]
　　pron. 哪一个; 哪一些; 哪个; 那，指前面提到的事物;
　　adj. 哪一个; 哪一些;
　　1. He lived on an invalidity pension which came as a weekly giro.
　　他靠每周领取的作为病残养老金的直接转账救济支票过日子。
　　2. Politicians want a lap-dog press which will uncritically report their propaganda.
　　政客们想要的是不问是非、甘为他们搞宣传的哈巴狗一样的新闻媒体。
　　3. We were in the same college, which was male-only at that time.
　　我们那时在同一所学院，当时只招男生。

Itis a boy who loves me.

it's a dog which always runs

it's ... which 类似于 it is ... that i .....

It is 后面加表示物的名词，which是关系代词，后面接定语从句修饰前面的名词。
如：It is a book which were writen by Lu xun。 这是鲁迅写的一本书。