THE BOOKS COST ME TEN DOLLARS 改同义句（1）I'm not sure what I can buy for my brother.(改同义句）I'm not sure __ __ __for my brother.（2）The young man is so strong that he can carry the heavy box.(改同义句）The young man is __ __ __carry the heavy box.（3）The picture cost me ten dollars.（改同义句）I__ ten dollars __the picture.（4）had had us 后面的动词要为什么形式啊，是原形吗
问题描述：
THE BOOKS COST ME TEN DOLLARS 改同义句
（1）I'm not sure what I can buy for my brother.(改同义句）
I'm not sure __ __ __for my brother.
（2）The young man is so strong that he can carry the heavy box.(改同义句）
The young man is __ __ __carry the heavy box.
（3）The picture cost me ten dollars.（改同义句）
I__ ten dollars __the picture.
（4）had
had us 后面的动词要为什么形式啊，是原形吗
答
1.I'm not sure what to buy for my brother.2.The young man is brave enough yo carry the heavy box.3.I spend ten dollars on the picture.4.让我们干什么,have sb do ,had为have的过去时是原形.但若是have sth ...