therefore记忆方法 一、整句中时一般不放句末，句首后要有逗号句中 1、按一般副词使用 2、做插入语这两个分得清吧 1、Thereforewe must lear English well. 2、They therefore can learn Englishwell. 3、Many fast food res taurant ,therefore ,have red furniture orwalls. 二、用在分句中 即一个句子一部分表示原因一部分表示结果。这时一般词前要用分号其后用不用逗 号无所谓。若第二个分句前是逗号或无符号则要注意 therefore 是副词和 so不一样要保持句子完整应用and therefore 。 1、Ihadaheadache;therefore I could not go to your party. 2、I was ill,andtherefore could not come. 3、 These birds are very beautiful andtherefore liked by many people. However的用发1. 用作副词(1)表示让步意为“无论如何”“不管怎样”用来修饰形容词或副词其词序为however+形 容词或副词+主语+谓语。这样用的however其实具有连词的功能用以引 导让步状语从句。如howevermuch he eats, he never gets fat.不管他吃多少他永远吃不胖。 用于此用法时请注意以下几点 ①此用法属 however 所有用法中最重要的考点同学们务请引起高度重视。 ②这样用 的however与no matter how大致同义。如People always want more, however[no matter how] rich they are.人总是富了还想再富。however [Nomatter how] hard I worked, she was never satisfied.无论我多么努力地工作她从来没满意过。 ③有时从句谓语可用情态动词。如Don’t laugh, however funny it may be.无论多么有趣也不要笑。I'11 try to finish it in time, however hard it may be.无论多么难我 也要按时完成。 ④“however形容词或副词主语谓语”有时可以有所省略。如I refuse, however favorable the conditions.不管条件如何有利我都不干。(conditions 后省去了are)I' d rather have aroom of my own, however small (it is), than share a room. 本文来源：https://www.wddqw.com/doc/6cde14800329bd64783e0912a216147917117e7f.html