base vt.以……为根据；n.基部；基地；基础
教材原句P10：It was based more on German than the English we speak at present.当时的英语更多地是以德语为基础，而我们今天所说的英语不是。
①This provides a good base for the development of new technique.这为新技术的发展提供了良好的基础。
②This film was based on a real story，which was very moving.
这部影片是根据真实故事改编的，很感人。
③We should base the theory on careful research.
我们应该把理论建立在仔细研究的基础上。
④This is the basic theory of language teaching.
这是语言教学的基本理论。
