时候

They knew when to attack and when to retreat.

他们知道什进攻和什撤退。

When do I need to use an apostrophe?

什用撇号？

You must turnon the light when you come in.

你进来要开灯。

That cup of tea was just the job.

那杯茶来得正是。

When would it be convenient for you to go?

你什去方便？

When will the police solve the crime?

警方什能破案?

It is seldom that it rains in such a time in winter.

在冬天这个很少雨。

There is no knowing when he will come.

无法知道他什来。

You should have good manners all the time.

任都应该有礼貌。

Whenever did you find time to do it?

你什有空做这事？

Whenever did he tell you that?

他什告诉你的?

I’ll be pushing up daisies by the time that happens.

到那我墓木已拱。

In his youth he was enamoured of music.

他年轻的酷爱音乐。

It is time for hens to brood.

该是母鸡孵蛋的了。

When will the baby chickens hatch out?

小鸡什孵出来?

When is the train due at Shanghai?

火车该什到上海?

It is too soon to sow yet.

现在还不到播种的。

Peaches are in season at the moment.

眼正是桃子上市的。

Be modest when you are on the crest of the wave.

在最得意的要谦虚。

He can be rather moody at times.

有他情绪不稳定。