attempt to do 和attempt doing 的区别?

Attempts to find a solution have failed.为什么attem加s啊.为什么一句子有两个动词attempt和have failed啊? attempt to do 和attempt doing 的区别? attempt to do 和attempt doing 有什么分别? attempt to do 和try to do 的区别 make an attempt 和 attempt to do有什么区别?最好能够举出例子. attempt to do和try doing 有什么区别 in an attempt to do make an attempt to do和try to do 用法一样吗,可以用make an attempt to do替换try to do 吗 attempt 既然是及物动词为什么能attempt to do in one's attempt to do 英语翻译除了try to do sth 和 attempt 之外还有什么啊 in vain attempt to do是什么意思啊..in vain effort to do和in the vain hope that 呢... Do not attempt to open the cart to attach devices. make an attempt to do/doing/at doing区别 Do not attempt to hind things which cannot be 请选出答案并解释一下下题中make an attempt to do 和make an efforts to do的区别..He made an____to solve the problem,but failed again.A.attempt B.efforts C.development D.experience try to,attempt to和aim to的区别 To attempt to be