動名詞的否定式用法

動名詞的否定式是將否定詞not置于動名詞之前。若動名詞為完成式或被動式，否定詞not應置于整個結構之前。如：

Not having a car, she finds it difficult to get around. 由于她沒有汽車，她感到行動很困難。

He was angry with me for not having done anything.  因為我什么也沒做，他對我很生氣。

注：若動名詞帶有邏輯主語，則否定詞應置于邏輯主語之后。如：

In case of my not being here, ask my brother to help you. 如果我不在可讓我弟弟幫助你。

I understand your not wanting to discuss the matter. 你不想談這事我理解。