我在半小时以前还看见他活生生的。

I saw him very much in the flesh only half an hour ago.

youdao

半小时以前谁来你们家了？

Who call at your house half an hour ago?

youdao

半小时以前我在这里买了两本很贵的辞典。

I bought two expensive dictionaries here half and hour ago.

youdao