should must can could do does did will could......+原形两个动词撞在一起,后面的都加ing楼下的别抄袭啊
我记得是suggest practise finish enjoy后加doinglike hate 后doing或 to do都能用其余一般用to do或do
正在进行时的动词后加ing。
这个问题太宽泛了,每种都有上千词,怎么说啊……