Unit 1
1.by+名词/动名词
2.现在完成进行时态
Unit 2
1.反义疑问句
2.It seems.that从句
3.even...through引导的让步状语从句
Unit 3
1.I don't think.
2.被动语态
Unit 4
虚拟语气
Unit 5
1.only引导的强调句
2.主语从句
Unit 6
1.What do you think of the story?=How do you like the story?
2.whatever的用法
Unit 7
1. v-ing型形容词和v-ed型形容词
2.Why not do...?
3.否定疑问句
Unit 8
1. not only...but also
Unit9
until的用法
OK?希望能帮到你啊!