The signs of the city never fail to impress the foreign tourists.

外国游客无一不对该城市留有深刻的印象。

You hit the nail right on the head.

你说对了。

He makes a pass at every girl he meets.

他对碰到的每一个女孩子都暗送秋波。

How did you get on in your exam?

你考得怎样？

I visited Japan on an observation tour of its industries.

我到日本观摩它的工业。

I did not notice it until yesterday.

我一直到昨天才注意到它。