改错：It is 3 weeks since Ihave seen him.

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• 改错句:It is two weeks since I have seen him
• 单句改错(每句一处错误,或多一词,或缺一词,或错一词)1.Shanghai is larger than any other city in Africa.2.Parents were busy,so they couldn't help cleaning the floor.3.It is sure that he will win the first place in the contest.4.He won't possibly allow you smoking here,as he dislikes it.5.He was last seen making up a story to add up to the book.6.He has hidden in the high mountain since ten years ago.
• 初二英语单句改错,急...1、You must do it like（A） the teacher told（B） you,or（C）you may make a few（D） mistakes.2、It is（A） two weeks since（B） I have seen（C) him(D).3、I am(A) very pleased(B) I have seen(C) as good(D) as Jim now.4、Don’t be（A） afraid with（B） the dog.It’s tied（C）to（D）the tree.
• It is two weeks since I have seen him.( have seen-- saw)谁能够帮我讲出一个所以然?麻烦题目看清啊——就是把HAVE SEEN改成了SAW 这是为什么？什么理由？
• 改错：It is 3 weeks since Ihave seen him.
• 求高手完成下面关于现在完成时的练习1 I have_____met him before, so I have no idea about him.2 Jack has______ finished his homework.3 Mr. Wang has_____tanght in this school for many years 4 "Have you______seen the film?"     "No, Ihave_____seen it." 5 "has the bus left______?"     "Yes, it has_____left."改错Have you ate fish and Fench friedI has lost my chemistry bookI haven't never been to that farmHe has had lunch yetHave you saw this movie yet?My brother has not return
• 改错句:It is two weeks since I have seen him要说出具体原因,确切点
• 用since,for,ago填空 1.he stayed with us ( ) two weeks.2.she arrived two weeks ( )3.i have not seen him ( ) monday.4.he has been ringing up continually ( ) lunchtime.5.we waited ( ) ages.6.he left a month ( ) and i have not seen him ( ) then.7.it has not rained ( ) march.8.my grandparents lived here a long time ( ).9.i have not heard from him ( )1993.10.we have been working on this new plane ( ) over a year now.
• It is two weeks since I have seen him.( have seen-- saw)
• 改错：It is 3 weeks since Ihave seen him.
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