have trouble 后面加ing
have trouble 后面加ing
have to 后面加 动词ing,还是原型?
have trouble doing sth.我只知道介词后动词得加ING.变动名词.
英语:have trouble/problems/difficulty加动词ing还是to do还是done
after后面加-ing?
have什么时候加ing
have加ing,怎么加?
为什么like后面加ing
just后面加ing吗
什么时候英文后面加ing
Do you have trouble learning English?这里learn为什么+ing?
哪几个英语动词后面加的动词是ing形式?比如enjoy,have fun