用now改写句子,now是现在进行时时间状语，意思就是将原句中的时态改为进行时。如：

I do homework in the evening.------- I am doing homework now.

i did homework yeaterday.---------I am doing homework now.追问

怎么改，我不会改，不知道咋改，咋变！

追答

你举个例子，我再告诉你，好吗

【把下列句子转换成一般过去时Iamveryyoungnow.Sheisquiteprettynow...

I am(was) very young now(then).She is(was) quite pretty now(then).He is(was) too fat now(then).You are(were) very happy now(then).they are(were) very tall now(then).Is(was) she at home now(then)?Yes,she is(was) are(were) you very tired now(then)?no,I was not.How old are(were) you now(then)?I was thirteen.Where is(was) the girl now(then)?She is(was) on her way home 相信你看出规律了吧is...wasam...wasare...werenow...thenAre they on the swings?Yes,they are

用now将下列句子改为现在进行时 （1）Do you sometimes listen to ...

前面有be动词，句子有正在进行的意思的通常用doing 句中往往有时间状语this time tomorrow(next week/year),now等，或在when结构的句子中补：这就是法则，没有为什么通常以e结尾的单词都要去e+ing例外：die-dying,tie-tying通常ie结尾，要改成y+ing

Wewillbuildanewlibrarynextyear.（将时间状语改为now,该写句子）

1.My parents are going to take me to the park today2.His brother and his sister are going to read books with him this evening3.I am going to be a very tall boythe weather is going to be sunny tomorrowthe dusty cinderella is going to be a beautiful princess at midnight.be going to do是表示将来要做什么的语型，其仅表示一个时态（将要做）因此通常放在动词（DO）之前，动词用原型（DO）第一二句的主语均为复数，所以BE GOING TO DO 中的BE要改成ARE第三句的类型比较特列，句子中的动词为BE动词，即AM,IS..所以因为在跟在be going to 之后，所以一律将AM,IS变为BE

用所给词的适当形式填空.what【】he【】【say】hesays“...

用所给词的适当形式填空.what【 does 】he 【say】？he says “keep off the grass” 【 Is 】your mother 【 cooking 】now please【 don't make】noise in class按要求改写句子we should be quiet in the reading room 改为同义句we【 should 】【 keep 】【 quiet 】in the reading room一般疑问句； Are they taking a walk in the park the signs【 don't 】【 mean 】different things 提问变特殊疑问句：【 What 】【 are 】they【 doing 】in the park？加油！不明白再问！