时态语态部分
一般现在时注意以下三点。
1. 表时刻表的情况下，一般现在代替将来时态用；The plane takes off at 10p.m.
2. “主将从现”符合的原则是：if条件句，时间状语从句，方式状语从句和让步状语从句。If he comes, I'll let you know.
现在进行时注意以下四点:
1．和always, constantly, forever, continually连用表示说话人的感情色彩，责备，埋怨等；
He is always thinking of others.
2. 强调情况的暂时性；He is walking to school because his bike is being repaired.
3. 强调一时的表现；He is being silly.
4. 表将来。
一般将来时注意以下三点。
1. 表倾向，习惯性动作。意为“会，不能不，没法不”；
2. 表推测
The man in the middle will be visiting president.
一般过去时注意：一般过去时说没有想到是指过去没有想到。
I didn't expect you were here.