初二英语：翻译句子

i just have cleaned up my room.
强调的是“刚刚”，即对现在有影响，所以用现在完成时。
he borrowed a book about art from me yesterday.
“昨天”提示用一般过去时。注意这个时候，“借”的用法。假如是自己把东西借给别人，即“借出”，用lend sth. to sb. 假如是从别人那里借东西，即“借入”，用borrow sth. from sb.
There are many kinds of books in our school library.

Don't worry. You will find your bike soon or later.

I have lost the library's book,and I must pay for it .
前后句的关系提示了“我把图书馆的书丢了”对现在有影响。所以用现在完成时

I have just cleaned up my room.
He borrowed a book about art from me yesterday!
There are many kinds of books in our school library.
Don't be hurry. You will find your bike sooner or later.
I have lost the library's book,and I must pay for it .
1与5．现在完成时
2 BORROW FROM LEND TO
3THERE BE 句型
我高中了，有时不适应初中语法，见量！