跟艾米莉一起学口语 第44期:一定;务必

by all means 一定；务必

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by any means 无论如何

by no means 绝不

例句：

By all means,I must visit my sick friend.

我一定要探望我生病的朋友。

You must get there by all means before dark.

你们一定在天黑之前到达那里。

A:Could I borrow your pen,please?

我可以借用你的钢笔吗？

B:By all means.

当然可以。