指示代詞(this,that,these,those)在句中可作主語、賓語、表語、定語：
This is yours and that is mine.這是你的，那是我的。
I want this book, not that book.我要這本書，不是那本書。
I like these and he likes those.我喜歡這些，他喜歡那些。
These computers are cheap.這些電腦便宜些。
What I want to say is this.我想說的就是這點(diǎn)。