_____(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清__(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清,请帮忙解释一下.

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_____(smoke)inpublicisnotagoodhabit,是smoke还是smoking?祈使句和动词短语开头加ing分不清__(smoke)inpublicisnotagoodhabi

_____(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清__(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清,请帮忙解释一下.
_____(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清
__(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清,请帮忙解释一下.

_____(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清__(smoke) in public is not a good habit,是smoke还是smoking?祈使句和动词短语开头加ing分不清,请帮忙解释一下.
smoking作动名词,此句中后有动词is了,不是祈使句

smoking. 分析句子中谓语动词就行了,一个句子只能有一个动词,此题有is了,所以其他动词做主语用动名词,即-ing。祈使句也只能有一个动词。

Smoking 是正确的。一个句子(除非是并列句或从句)中不能出现两个动词,所以主语应该是smoking in public。祈使句是要求命令式的语气,如 Do not smoke!