您要查找的是不是：
- He is not sure about the matter. 他对此事毫无把握。
- He is not sure if he can come this Sat. 苏格兰？好象不错也。。。不过只能坐车，飞机是没指望了。
- He is not interested in math in the least. 他对数学一点都不感兴趣。
- He is not serious about literature. 他对文学不感兴趣。
- Much as he is opposed to lawbreaking, he is not bigoted about it. 他虽然非常反对犯法，但并不固执于此。
- I am not sure when he is leaving. 我不能肯定他什么时候走。
- He is sure about his eventual success. 他肯定自己最终会成功。
- He is not very sanguine about our chances of success. 他对我们成功的机会不太乐观。
- He is either a clerk or a worker. I am not sure. 他不是职员便是工人。我不大清楚。
- I am not sure whether he is to turn up tonight. 我不能断定他今晚是否能来。
- Please let him alone; he is not in his right mind. 请不要打扰地，他精神不正常。
- He is not made for climbing the tree of knowledge. 他不是生来适于攀登知识之树的。
- He is not the kind of man I'd like to serve under. 我不喜欢在他这种人手下干事。
- He is not a man who forgives easily. 他不是一个肯轻易宽恕人的人。
- He is not a man with worldly wisdom. 他不是一个有处世才能的人。
- He is not so much a writer as a scholar. 与其说他是作家倒不如说他是学者。
- I'm not sure if he is qualified enough to be our representative. 我不确定他是否够格做我们的代表。
- He is not such a bad guy as you (are). 他不是那种和你一样的坏家伙。
- Well as he does in study, he is not arrogant. 虽然他功课很好，却一点都不傲慢。
- He is not at all alive to the danger he is in. 他完全没有意识到他处境的危险。
