be good at 后面是接do还是doing

be good at 后面是接do还是doing be good at do well in 这两个后面是加do 还是 doing be good at+do 还是doing 问下各位,be good at 后面加doing 还是do be good at to do还是be good at doing还是be goodat do be good at to do sth 还是 be good at doing sth be helpful to 后面接doing 还是do be good at +do sth还是 doing sth 或是其他的 请问下后面接的动词形式（to do/doing）：have fun+ be/have good ask sb后面一般是接to do 还是doing turn to 后面是接to do还是doing except后面是doing还是to do