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1·We went home at half past four yesterday.

我们昨天四点半回家的。

2·It's half past four.

现在四点半了。

3·I should think about half past four years.

我应该想到过去的四年半。

4·From half past four to half past five in the afternoon is our favorite time.

下午四点半到五点是我们最喜欢的时间。

5·They have tea at half past four.

他们在四点半钟吃下午茶点。

6·About half past four I should think.

关于过去四年半，我应该想到。

7·Mrs. Semple called me at half past four.

山普太太凌晨四点半叫我起床。

8·It's half past four now. I must go home.

现在四点半了。我必须回家了。

9·It was half past four. Everything was ready.

四点半了。一切都准备好了。

10·As a rule David clocks off at half past four on Saturday.

每逢星期六戴维通常在四点半下班。