非谓语动词否定式用法说明
一、基本构成方法
非谓语动词的否定式通常是将否定词not置于正个非谓语动词之前——如果非谓语动词为完成式,则应将否定词置于having或to have之前;如果非谓语动词为被动式,则应将否定词置于being或to be之前。如:
He pretended not to see me. 他假装没看见我。
You were lucky not to be killed. 你大难不死,真是好运气。
She’s angry about not having been invited. 她对没有受到邀请感到生气。
二、值得注意的问题
当非谓语前带有逻辑主语时,否定句词习惯上是放在逻辑主语后,非谓语动词之前。如:
I’m surprised at your not having noticed. 你竟未注意到我感到吃惊。
In case of my not being here, ask my brother to help you. 如果我不在可让我弟弟帮助你。
注意,so as to do sth 和in order to do sth这两个结构的否定式,我们总是把否定词置于不定式符号to之前,而不是置于整个结构之前或其他位置。如:
Go in quietly so as not to wake the baby. 一进去时不要出声,以免把宝宝吵醒。
They must have worn gloves in order not to leave any fingerprints. 他们一定戴上了手套,以防留下指纹。