He is not only a poet but an artist, too.

3．as if/though好像; 似乎

as if/though是从属连词, 引导方式状语从句或表语从句, 在使用时应注意:

（1）as if/though引导的从句所表示的情况不是事实, 而且如果是主观的想象或夸大性的比喻时, 谓语动词通常用虚拟语气.

　　例如:

The speaks English as if he were an Englishman.

他说起英语来, 好像是英国人似的

The machine works as though it were operated by a man.

这台机器工作起来就好像有人操作一样.

（2）常与feel, seem, look连用, 等于连词that, 其主语一般是it, 如果表示的情况是事实或具有很大的可能性, 谓语动词通常用陈述语气.

　　例如:

We have missed the bus. It looks as if we will have to walk.

我们没有赶上公共汽车, 看来我们得步行了.

（3）后面可接现在分词, 过去分词, 不定式或形容词等短语, 这类结构实际上是一个省略从句.

　　例如:

He cleared his throat as though to say something (=as though he were to say something).

他清了清嗓子, 好像要说什么似的

The woman set upon the thief as if mad (=as if she were mad)

那妇女发疯似地扑向小偷.

二、词义辨析

1．subject, theme, title和topic

（1）subject指 "题目; 课题", 用途很广. 多指讨论,研究的对象.

　　例如:

"Laser processing" is the subject of the seminar.

课堂讨论的题目是 "激光处理".

（2）theme "主题", 一般指文学作品, 音乐作品等的主题.

例如: