tomatoes可数吗

　　例句：

　　Would you like some tomatoes?

　　你要来点西红柿吗？

　　Ketchup is made from tomatoes.

　　茄汁是由蕃茄制成。

　　There are twenty tomatoes.

　　这有二十个西红柿。

　　Tomatoes won't keep in hot weather.

　　天气热，西红柿存不住。

　　They're not onions. They're tomatoes.

　　它们不是洋葱，它们是西红柿。