怎样把两个句子合并成一个带有定语从句的复合句

Question

1、The boy goes to school every day. The boy is four years old.
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2、She is the girl. We are looking for the girl.
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3、This is the computer. My uncle sent me the computer last year.
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Answer 1

这样的两个句子一般是第一句是主句，第二句是第一句宾语的解释，举个例子哦
this is a book 这个是主句
I boght this book yesterday 这个是对book的解释
合并的话就是： this is a book that I bought yesterday 这个句子中主句就是 this is a book，后面的定语从句是对book的修饰，或是book的性质
总得来说就是句子的主干不变，把形容第一句宾语的第二个句子用‘that’或‘which’引导改成并与从句

Answer 2

1、找出具有相同意义或连接的词
2、找出相应引导词连接两个句子如that，which（物)，who（人）
3、调整句子关系，时态等

Answer 3

用which，that来引导就可以了啊。。。

Answer 4

帮你回答补充问题：1 The boy who is four years old goes to school every day. 2 She is the girl who we are looking for. 3 This is the computer which my uncle sent me last year.