9. need和dare的用法    

 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