have experience of doing sth

Question

1.有没有have experience of doing sth?还是只有have experience doing sth
2.是不是除了完成时,助动词后都加动词原形?
3.在初三年.to作介词的短语或语法有哪些？

Answer 1

1只有have experience (in) doing sth.o
2不是的， 在介词后面要用ing。
3to介词的话除了介词本身的用法，还有就是动词不定式

Answer 2

没有have
experience
of
doing
sth，有have
experience
in
doing。
have
experience
in
doing中in可以被省略.
have
experience
（in）
doing
sth.做某事有经验
短语
have some experience in doing sth.
have much experience in doing sth.在某方面有很多经验
例句
Do you have some experience that you persist in doing something
for
a
long
time which make you feel proud?
Only bid if you have specific experience in doing this.
只有出价，如果你有这样做的具体经验。
'If you want
to
be delivering a Web experience around multiple devices, youhave to
be doing it in HTML5, ' he says.他说：如果你想要提供适用多种设备的网络体验，就必须支持HTML5。