一、冠词：（1）a/an 的区分：注意以“U”开头的单词。如果发字母u本身的音/ju：/，前面加a：a useful book, a university, a usual chair；如果发以外的音，前面加an：an unusual chair, an unimportant meeting, an unforgetable experience（2） 球类运动和三餐饭前不加theplay football ， play table tennis乐器前加theplay the violin，play the piano（3）a一个，the那个二、介词:（1） 介词+doing 介词+ 代词宾格形式 Neither of us is late.The book is for you. The knife is used for cutting things.Tom is sitting between him and me.（禁用“I”）关联记忆：介意 Mind + doingWould you mind my smoking h
