易混语法点梳理(11组)n doing/do/to do开头;n if的三种用法:宾语从句/真实条件/虚拟条件n 短暂动词与延续动词get married/be marriedn dont/not to do/not don 后置定语doing/done/to don 感叹词what/hown 冠词a, an, then So do I/So I do/Neither do In 不定代词neither, either, both, all等;n 定语从句与宾语从句的连接词that/whatn have gone to/have been to/have been in