440　lift a hand和lift one's hand

① lift/raise a hand表示“做一点事（帮忙），劳驾，费心”。

They didn't lift a hand to help me. 他们一点忙也不肯帮我。

Please lift a hand to carry it upstairs. 劳驾，请帮我把它搬上楼。

② lift one's hand表示“举手”，多用于发咒或宣誓。

The man lifted his hand and pleaded not guilty. 那人举起手来，申诉说他无罪。