12页纸！秒懂整个英语语法体系！真的很重要！

①常见英文缩写 We are --- we’re will not --- won’t are not --- aren’t did not --- didn’t You are --- you’re was not --- wasn’t There is --- there’s When is --- when’s They are --- they’re where is --- where’s were not --- weren’t does not --- doesn’t ②18个疑问代词 问 原因用---why 问 怎样用---how 问 是谁用---who 问 什么用---what 问 哪里用---where 问 哪个用---which 问 多大用---how big 问 谁的用---whose 问 年龄用---how old 问 多高用---how tall 问 多少用---how many 问 价格用---how much 问 多长用---how long 问 频率用---how often 问 几点用---what time 问 多久用---how soon 问 多重用---how heavy ……