冒昧

May I make so bold, sir, as to suggest that you try the grilled fish?

先生，我地建议您嚐嚐烤鱼。

I hope I won't be considered presumptuous if I offer some advice.

如果我出点忠告，希望不会显得。

I took the liberty of borrowing your dictionary while you were absent.

不在时我借用了的词典。

I ventured to write to her.

我给她写信。

Or the writer may, riskily, ask the questioners what is real, anyway?

有的作家或许会地反题的人：究竟什么是真实？

I venture to say that....

恕我地说...。

Excuse my -ties.

请原谅我的。