您要查找的是不是：
- I think it is necessary to learn science. 我认为学科学是必要的。
- I think it is necessary for us to read a lot. 我认为大量阅读是必要的。
- I think it is necessary to look before you leap. 我觉得三思而后行是有必要的。
- I think it is necessary to help her. 我认为帮助她是必要。
- I think it is necessary to learn a foreign language. 我认为学习一门外语是必要的。
- I think it is necessary for you to report your family. 我认为您有义务保护您的家人。
- I think it is necessary for you to report the theft to the police. 我认为您有必要把这次失窃向警察报案。
- I think it is necessary to leave for some day after such an unhappy brawl. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- I think it is necessary to depart some time after this unhappy quarrel. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- It is a nice song and I think it will catch on quickly. 这首歌很好，我想它会很快流行起来。
- I think it is compulsory to look over the house. 我认为检查这栋房子势在必行。
- After the unpleasant quarrel, I think it is necessary to leave here for some time. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- After such an unhappiness quarrel,i think it is necessary to leave for a period of time. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- I think it is necessary for me to leave for a while after the unpleasant arguing. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- I think it is dangerous to be a miner. 我认为当矿工是很危险的。
- I think it is necessary for me to leave for a short time since such an unpleasant quarral happened. 发生了这样不愉快的争吵之后，我觉得有必要暂时离开一段时间。
- It is raining now, but I think it will clear up soon. 现在还在下雨，不过我想很快就会放晴。
- I think we are two civilized human Beings. Do you think it is necessary to threaten each other? 我们都是文明人，你认为有必要威胁对方吗?
- I think it is necessary to do a thin section analysis to determine the lithology. 我认为需要观察薄片才能确定岩性。
- Therefore I think it is necessary to demostrate that kind of pungency through the movie. 所以我觉得有必要以电影的形式，将这种苦痛表现出来。
