教我几道英语题目

the computer is expensive.
_____ ______expensive computer is！教教我感叹句因怎么做

mr black went out in a hurry yesterday.(同义句）
mr black _____ _____ yesterday.

Mary has learned chinese since she come to china.(划线提问）【since she come to china划线】
_____ _____ has Mary learned chinese?

Thank you.You've been ______(help).

What an expensive computer it is! (你少打了it)
或How expensive the computer is!

规则： what +主语+ 代词+动词(包含be动词）
How +adj/adv +主语+动词
What a hot day(it is)!=How hot the day is!
What a beautiful shirt you wear (it is)！=How beautiful the shirt you wear is!

2.left hurriedly 匆匆离去

3.How long

4.helpful

the computer is expensive.
How an expensive computer is！

Mr Black went out in a hurry yesterday.(同义句）
Mr Black went out hurriedly yesterday. (问：这题少是不是少打了条横线？）

Mary has learned chinese since she come to china.(划线提问）【since she come to china划线】
How long has Mary learned chinese?

Thank you.You've been helpful(help)。
（对于答案不理解，加我Baidu Hi,我给你讲解）

What an
第二个不会
How long
helpful

感叹句：how+adj/adv+..
what+n/词组+...

the computer is expensive.
What an expensive computer is！ 如果expensive前面没有an 则应是How expensive the computer is!