to的用法有哪些？

Question

如题所述

Answer 1

1. 当and或or连接两个并列不定式时，第二个to常省。
I plan to call him and discuss this question.
我计划给他打电话，讨论一下这个问题。
My friend in China asked me to telephone or write to her in my free time.
我中国的朋友让我有空给她打电话或写信。
2. 当两个并列to有对比意义，第二个to不能省。
I haven’t decided to stay at home or to travel to Beijing this holiday.
我还没决定假期是待在家里还是去北京旅行。
To be, or not to be, that is the question.
生存还是毁灭，这是一个值得思考的问题。（《哈姆雷特》）
3. 当两个to之间无并列连词，to不可省。
I came here not to help you, but to fright you.
我来这不是为了帮你，而是为了吓唬你。
4. 当三个或以上带to不定式构成排比，所有to不可省。
Read not to contradict or confute; nor to believe and take for granted; not to find talk and discourse; but to weigh and consider.