I finished my homework an hour ago(改为现在完成时)

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• 将下列句子改为否定句或一般疑问句改为否定句：1.Pat and Tim drove to Hippo Pool last weekend.2.I bought a hat at the gift shop.3.He saw many animals asleep during the day.4.We skied all day yesterday.改为一般疑问句：1.I finished my homework this morning.2.My mother cleaned the house yesterday.3.They play football after school everyday.4.We call our friends very Sunday.5.Dinosaur D eats plants.6.It drank a lot of water.7.It walked on two legs.8.It has small teeth.9.Dinosaur T has sha
• 1.It is now four fifteen in the afternoon.Mrs.White flnished her book a quarter of an hour ago.At what time she finished it?What's the next number?2.14,29,88,353,______________________ B.You're welcome!D.It's my pleasure!B.The same to you.D.Me,too.B.What does your mother D.What job does your mother do A.Sorry,I don't know.B.Certainly.Here you are C.Thank you,sir.D.Yes,please.E.None of us.F.You are welcome.G.Yes,she is H.Over there.I.It doesn't matter.
• 翻译句子：1.昨天我直到写完作业才看电视.I _____________ I finished my homework yesterday.2.半小时以后,婴儿醒了,开始哭了.Half an hour later the baby_____
• -I have finished my homework.-When ( )you( )it?-Two hours ago
• I have aiready finished doing my homework.（改为一般疑问句并作否定回答）
• Have you finished you homework?Yes,I_____(finish) it an hour ago.为什么用一般过去式填空而不用现在完成时?
• I have finished my homework.将其改为过去完成时,在改为一般疑问句,
• 对于现在完成时的提问的一些问题先举个例子：when _ you _ this book?I _ it for two weeks A、have；bought ；have had B、did ；buy ；have had 我知道答案是A,但我后来冒出了一个疑问 如果选B,语法上也没有错误,并且我曾经看到过这样一个句子：when did you finish your homework I have just finished my homework.那像这样的问句,什么时候问句里加完成时,什么时候加一般过去式呢
• I didn't go to bed until i finished my homework改为同义句I went to bed____ _____ my homework.
• It took her three years to finish the book 画线部分提问（1）It took her （three years） to finish the book?(画线部分提问)___ ___ ___it___her to finish the book?(2)My pet dog died three months ago(改为现在完成时)My pet dog ___ ___ ___ for three months (3)I don't Know.Where do you want to go?(合并成一句话)I don't Know where ___ ___to go
• 证明：对任意实矩阵A,有r(ATA)=r(AAT)=r(A)
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