高三英语第一轮复习主要进行的是单词的积累和语法的全面掌握,在上课课文学习和课后阅读练习中不断巩固抓牢,为后面的做题演练大幅度提分打基础。
新东方网高考频道整理高考英语常考词汇用法及高考英语语法,帮助大家分小节记忆。
must + have + 过去分词
表示推测过去某动作“一定发生了”。如:
—They quarrelled quite often and whenever they quarrelled they threw glasscup at each other.
—They must have broken a lot of glasses.