hope sb. to do sth.为什么错误？英语大师进！

Question

最近脑子有点糊涂了，记得老师讲过这个是错误的用法，但我忘了原因是什么！
这个句型和ask sb. to do有什么不同?为什么一个可以用，一个不可用，谢谢各位！
我要的是原因。。

Answer 1

楼下说错了，hope加不定式是可以的，但是hope sb. to do sth.是没有的。这没什么原因可讲，因为hope sb. to do sth.并不违反任何语法规则，只不过常用的语法习惯如此，记住就好了。

hope动词的用法：
及物动词：
1、hope to do sth：
I hope to have a beautiful wife。
2、hope+that 宾语从句
I hope that I will have a beautiful wife。
3 没有hope sb to do sth。虽然hope是及物动词,但没有动词不定式作宾语补足语的用法。
不及物动词：
1. hope for;
He prayed and hoped for the best.

Answer 2

hope 前后的主语有改变，就 能用TO 了，只能用从句，只能HOPE SB WILL DO STH. 是希望某人 做STH ,表示期望。ASK SB TO DO SHT 是请求，要求某人做某事。你可以说hope to do sht ,比如，你说，i hope to solve this difficult problem .我希望能解决这个难题。 I hope you will slove this difficult problem,我希望你可以解决这个难题。希望某人做某事，如果要用HOPE ，只能是加从句。你要问为什么，我只能说，这就是这个单词生出来，就只能这样用。

Answer 3

hope在大多数情况下都是不及物动词，接从句的较多。
即使作为及物动词时，也是接代词。
hope没有接不定式的搭配，要接不定式用wish。
这就是固定搭配，没法说为什么啦。

Answer 4

hope somebody to do something=you "wish" somebody to perform something for you, but in reality, it does not seem to be happen very possibly, it is just a "good wish or hope" of you.

To compare with it, ask somebody to do something=you ask for somebody's help or assist to accomplish some tasks that you might not be able to do on your own. By the moment you ask somebody, you might have known that he/she is likely to do it for you.