though ⁴

though 是个从属连词, 引导让步状语从句。当从句的主语与主句的主语相一致, 并且从句的谓语动词是 be 时, 常常省略主语和 be(参见 ellipsis $^{5}$ )。

... though not very fast = though it is not very fast

下面是一些类似的例句：

1. Though not large, the room was well lit... 这个房间虽然不大,但是采光很好……

2. Though old and a little deaf, Dr. Johnson still had a good brain. (全国高考,93,阅C) 约翰逊先生虽然年老而且有点儿耳聋，但是头脑清晰。

3. Though tired, she still kept on running. 尽管很疲劳，但她继续跑。

4. The article is very important though short. 那篇文章虽短,但很重要。

5. Though understanding no Spanish, she was able to communicate with the other students. 尽管她不懂西班牙语，但是她能够同其他学生进行交流。

6. Though refusing to eat, he admitted he was hungry. 虽然他拒绝吃饭，但他承认他饿了。