不见得

It is improbable that she will go.

她不得走。

It was very unlikely that he would do that.

不得做那种事。

The more expensive articles are not necessarily better.

贵的东西不得就好。

He is often played trikes on by his frieds.

不得吧，没头发的好像烦恼更多。

I doubt that he will come.

不得。

You are to remember that I knew no more of my descent than any cadger 's dog.

们可记得对于自己的家世，不得比流浪汉的一头狗知道的更多。