應(yīng)該考是非謂語(yǔ)動(dòng)詞.
to do 表示的是 將來,可以表目的.例如
there are a lot of work to do.有很多工作要做.
doing 表示的是 主動(dòng),還可以表進(jìn)行.例如
there are some people swimming in the pool.游泳池中有些人在游泳.
done 表示的是 被動(dòng),還可以表示完成過去.例如
What do you think about public profanity?Rude?How about in schools?Should there be something done?你對(duì)臟話有什么看法?很粗魯?那如果發(fā)生在學(xué)校呢?我們應(yīng)該做些什么?這里的 something 和done 之間是被動(dòng)關(guān)系,something should be done.