Mr.Sawyer usually reads his newspaper,but sometimes he and his wife watch television.

题目

Mr.Sawyer usually reads his newspaper,but sometimes he and his wife watch television.
watch 前面为什么不加are?

答案

如果用are的话,就应该是are watching,表示现在进行时,就是现在正在看电视.
而watch是一般时态,指得是常常会这样做.sometimes就是明显的一般时态的标志