._____ this experiment is not difficult .(为什么是to do 不是doing!
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._____ this experiment is not difficult .(为什么是to do 不是doing!
![._____ this experiment is not difficult .(为什么是to do 不是doing!](/uploads/image/z/2197079-71-9.jpg?t=._____+this+experiment+is+not+difficult+.%28%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AFto+do+%E4%B8%8D%E6%98%AFdoing%21)
To do 表示这个还没有做
而doing表示正在做
所以用to do,表示 去做这个试验并不难.
而doing表示正在做
所以用to do,表示 去做这个试验并不难.
._____ this experiment is not difficult .(为什么是to do 不是doing!
_____ this experiment is not difficult.A.Having done B.Being
是find difficult doing还是find difficult to do
is difficult to do sth .还是to doing
pay attention to为什么一定是doing,为什么不是do
1.This is not very difficult.______ can do it.
this problem is not difficult.you can do it ( ).
_____ sports is good for us.前面用To do还是Doing.为什么?
I find this experiment is()for us to do.A
This is the way to do it.中的to可以去掉吗?或者把to去掉do变doing?为什么?
This maths problem is rather difficult,but it is not _____ t
英语there is no need doing还是to do 答案给的是doing 为什么