高考英语语法：动名词否定式的用法
动名词的否定式是将否定词not置于动名词之前。若动名词为完成式或被动式，否定词not应置于整个结构之前。如：
Don’t be angry with me for not having written. 我没给你写信请别生我的气。
He felt bad for not being able to lend a hand. 他因不能帮忙感到遗憾。
I am sure you will excuse me for not speaking to you first. 我肯定你会原谅我事先没跟你说。
He said he so much regretted not being able to swim. 他说他对不会游泳感到非常遗憾。
She was angry about not having been invited. 她没被邀请很生气。
I must offer my apology for not coming to your party. 我没来参加你的晚会，必须向你道歉。
【注】若动名词带有逻辑主语，则否定词应置于逻辑主语之后。如：
I’m surprised at your not having noticed. 你竟未注意到我感到吃惊。
Jenny’s not having been trained as a dancer is her one regret. 杰妮没受过舞蹈的专业训练是她感到遗憾的事。