not having还是having not

　　例句:

　　Not having to get up early is just one of the perks of being retired.

　　不必早起只是退休生活的好处之一。

　　She laughed and chatted but was, in truth, not having much fun.

　　她虽然又是笑又是侃，但实际上玩得并不开心。

　　I'm not having children who don't like cheese. It's not on

　　我可不要不爱吃奶酪的孩子，那可不行。

　　We begin to reproach ourselves for not having been more careful.

　　我们开始自责起来，怪自己不够小心。

　　It's too stupid for words not having the machines switched on when they're most needed

　　最需要这些机器时却不打开，真是愚蠢至极。