Try subbing a couple cups of coffee out for like an herbal tea.

试着把几杯咖啡换成花草茶。

When we're subbing out these nouns for pronouns, we can figure out which ones we have to use, because pronouns have different forms depending on whether or not they are subjects or objects.

当我们将这些名词替换为代词时，我们可以弄清楚我们必须使用哪些，因为代词有不同的形式，这取决于它们是主语还是宾语。