a lot of questions是不是question加S.为什么

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• I've heard a lot about you.'ve是 have吧.这个句子是一般过去时只是在动词后面＋ed.可是为什么不在have后面加?要是变疑问否定都在have上面变啊.have I...haven't 怎么过去时就不在have上变了?另外这个have是不是个跟be动词功能类似的词?
• a lot of questions是不是question加S.为什么
• You will be asked a lot of strange questions by them.这句话是将来发生的,为什么ask还要加ed
• 答得好加悬赏1.There is ____(a/an)"s"in the word "desk"请说明如何区分元音单词 2.we spend an hour finishing _____(the/不填)说明原因3.____(that ,this)is all i wanted to say 说明理由4.I' m afraid get an injection is ____(much too;a lot )原因5.He returned ____(at /on)a rainy night 正确答案是at.但是不是说具体的一天用On 6.解释下括号里为什么用这个时态She always (studied)something whenever she(played)7.-has Tom finished his homework today?-I have no idea .He (was doing )it this morning 括号里为什么不用现在完成时?8.They were (frigh
• You will be asked a lot of strange questions by them.这句话是将来发生的,为什么ask还要加ed
• we need a lot of energy to work and live.此句中energy 是不是可数名词,要不要加s.
• 希望可以一起交流SAT语法问题,1.Even when Barbara Jordan put questions toward a political nominee,her elegant diction evoked in listeners memories of her eloquent political speeches.答案说“toward”错了,是不是应该改为“to”呢?（question 后面的介词用to?) 怎么理解句中的“even when”呢?为什么不把“even”去掉呢?2.Only by the afterglow of the sunset could the hikers find their path to the campsite at so late an hour.可以把“could”改为“did”吗?“so late an hour”怎么理解呢?
• we need a lot of energy to work and live.此句中energy 是不是可数名词,要不要加s.
• a lot of questions是不是question加S.为什么
• do you have any questions和do you have any problem加s的问题口语中问道“你还有问题吗?”的时候,如果用到any,any后面的可数名词要加s吗?很常见的Do you have any questions为什么question后面要加s?那Do you have any problem后面要不要加s呢?
• He will be 180 centimetres tall in 13 years' time?对180 centimetres tall提问
• 已知AD是Rt△ABC斜边BC上的高,且BD：DC=1：3,求AB：AC的值