Hayley教口语，“不善表达”用英语怎么说？

to be shy and not often express wishes or opinions

害羞，不善表达。

Here 'backward' means shy or unwilling; 'come forward' means present oneself into view.

这里backward的意思是害羞或不愿意;come forward意思是表达自己。

I'm sure Matt will tell you what he thinks of the idea - he's not usually backward in coming forward.

我相信马特会告诉你他对这个观点的看法——他一向很直爽。

Although they are rich, they are rather backward in coming forward with the poor.

他们虽然有钱，但在帮助穷苦人方面却不大踊跃。