一、 英语各种时态构成表：以play为例：
一般时态 进行时态 完成时态 完成进行时态
现在 play is has has
plays am playing have played have been playing
are
过去 played was had played had been playing
were playing
将来 shall shall shall shall
will play will be playing will have played will have been playing
过去 should should should should
将来 would play would be playing would have played would have been playing
第二章 名 词Nouns
（一）. 名词变复数：
1. 规则名词复数形式： 在单数名词后加 “s” day → days week → weeks
2. 在以 o, s, x, ch, sh 结尾的名词后加 “es”.
hero → heroes box → boxes class → classes
bush → bushes watch → watches
第三章 形容词、副词比较级和最高级Comparative degree & Superlative degree
第四章 被动语态Passive Voice
五、非谓语动词
第六章 英语句型基本结构Basic English Sentence Structures
第七章 主谓一致Principle Rules for Subject and Verb Agreement
