①。promote作“提升”来讲的时候，指的是 提升职位 后面跟复合宾语 promote sb 加职位可以说promote their confidence不过意思是 增进②。pro and con当名词用时 经常用复数 正面 和方面 赞成和反对the pros and cons③。on the one hand, on the other...后面跟的两个句子是并列 或对比 写某事物的优缺点可以用这个结构④。对某事灰心是lose heart in sth.介词用in，有lose one's heart to sth.不过意思 与前面的相反 倾心于某事⑤。“使某人处于某种境地有put sb. in a （加个形容词） situation这样的说法 还有，是用in如果把situation换成position 也是用in 其实这是介词 的用法⑥。这句话对：While doing homework, students can use calculators when they meet with a few really difficult figures so that they could finish their work faster, and thus spend the rest of the time doing other meaningful things, such as developing their own hobbies. thus是副词可以这样用 前面最好加and 后面是并列谓语 。⑦。From my point of view, it is not necessary for us students to use calculators in tests, for the figures in our tests are not so difficult as beyond our ability to work out. 。。。 not so difficult as beyond our ability 。。。这部分 把 so difficult as去掉 ⑧。an introduction of...还是to... 根据意思 选用 这属于 介词 用法如an introduction to english grammar 英语语法初步
我爱蟹爪兰
