1. 主系表结构，表语从句：系动词主要是be动词 2. 常用系动词（感官动词）：feel、look、sound、smell、taste St...

形容词性从句：定语从句 副词性从句：状语从句 名词性从句：主语从句，定语从句，表语从句，同位语从句

One of the most important human emotions is love. However, there are man...

As the evening wore on Jessica began to really enjoy herself. She talked...

Jessica's 20-year class reunion was held at a fancy hotel. When she arri...

Excuse me, do you have a minute? I'm sorry, not right now. I'll be free ...

There are many different cycles in nature, such as the cycle of seasons....