情态助动词包括will,would,shall,should,can,could,may,might,must,need,dare,ought to,used to have to等.
need,dare,ought to,used to 后接原形不定式（也就是to do）..注意：need (to) do
dare (to) do ：不带to 是情态动词,带to 是实义动词
英语中的情态动词有哪些?还有后面+to do的有哪些~
情态助动词包括will,would,shall,should,can,could,may,might,must,need,dare,ought to,used to have to等.
need,dare,ought to,used to 后接原形不定式（也就是to do）..注意：need (to) do
dare (to) do ：不带to 是情态动词,带to 是实义动词