特殊情况：

并非所有动词都有现在进行时,以下动词无现在进行时：

1)、部分系动词：taste(尝起来),look(看起来),sound(听起来)等

The meat tastes delicious.

This piece of music sounds beautiful.

You look tired.

但以下用法是正确的：

I am feeling (感觉)better.

The weather is getting(变得) colder and colder.

English is becoming(变得) more and more popular.

2)、表喜好的动词：like,dislike,prefer,hate等

3)、表愿望的动词:hope,wish,expect，want等

4)、感观动词表结果的对应动词：see(看到), hear(听到),smell(闻到),feel(感受到)

I can smell the taste of coffee.

我能闻到咖啡的味道。

5)、表观点想法的动词：think(认为), suppose等

6)、表知觉认识的动词: realize(认识到)，know，understand等