两个并列不定式第二个不定式要不要带to

请问是 to do and do 还是 to do and to do? 如果把 and 换成 or 呢?后面一个不定式要不要带 to?

最佳答案
■当两个带 to 不定式由 and 或 or 连接时,第二个不定式符号常可省略。例如:

I intend to call on him and discuss this question again.

Christina hardly knew whether to laugh or cry.

She asked me to telephone or wire to her on Monday.

■若两个并列的‍带不定式有对比含义,第二个不定式符号便不能省略。例如:

To be or not to be, that is the question. 存在还是毁灭,是个要考虑的问题。

I haven’t decided to go home or to stay at school this summer .

■不用并列连词的情况下,第二个不定式符号也不能省略。例如:

Please go to the seaside to swim, to get suntanned.

He likes to stay with the peasants, to work in the fields with them.

■当三个或三个以上带不定式构成排比结构时,所有的不定式符号均须保留。例如:

Read not to contradict or confute; nor to believe and take for granted; not to find talk and discourse; but to weigh and consider.

(以上摘自《新编高级英语语法》,章振邦主编,上海外语教育出版社2012年12月第1版)

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