情态动词need               实义动词 need

 现     You need (not) do      You (don’t) need to do           

 在    

 时     He need (not) do       He needs (doesn’t need) to do

 过                            You needed (didn’t need) to do 

 去   

 时                            He needed (didn’t need) to do

 将    You need (not) do       You will (not) need to do

 来

 时    He need (not) do        He will (not) need to do

 句型    时态                     动词  

                  情态动词dare           实义动词 dare

肯定句  现在时  dare to 少用           dare/dares to do

        过去时  dare to 少用           dared to do

否定句  现在时  daren’t/dare not do    do/does not dare (to) do 

        过去时  dared not do           did not dare (to) do

疑问句  现在时  Dare he do?             Do you/Does he dear (to) do?

        过去时  Dared he do?           Did he dare (to) do

needn’t have v-ed 表示过去做了某事，但没有做的必要， 意为“本没必要…”。例如：

You needn’t have waken me up; I don’t have to go to work today

10.表推测的情态动词句子的反意疑问句

He must/may be in the room, isn’t he?

He can’t be in the room, is he?

He must have finished the work, hasn’t he?

He may have done the work last night, didn’t he?

：情态动词+行为动词进行式

情态动词+行为动词进行式(即情态动词+ be + v-ing形式)，表示推测或评论某动作现在是否正在进行。例如：

1)He must be playing basketball in the room.

2)She may be staying at home.

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