1. 當(dāng)and或or連接兩個并列不定式時,第二個to常省。
I plan to call him and discuss this question.
我計劃給他打電話,討論一下這個問題。
My friend in China asked me to telephone or write to her in my free time.
我中國的朋友讓我有空給她打電話或?qū)懶拧?/p>
2. 當(dāng)兩個并列to有對比意義,第二個to不能省。
I haven’t decided to stay at home or to travel to Beijing this holiday.
我還沒決定假期是待在家里還是去北京旅行。
To be, or not to be, that is the question.
生存還是毀滅,這是一個值得思考的問題。(《哈姆雷特》)
3. 當(dāng)兩個to之間無并列連詞,to不可省。
I came here not to help you, but to fright you.
我來這不是為了幫你,而是為了嚇唬你。
4. 當(dāng)三個或以上帶to不定式構(gòu)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.
讀書時不可存心詰難作者,不可盡信書上所言,亦不可只為尋章摘句,而應(yīng)推敲細思。(《論讀書》)
因此,關(guān)于不定式,我們除了要分清帶to不定式和不帶to不定式,還要掌握帶to不定式在哪些情況下要省略to這一符號,做到具體情況具體分析。