判断下列句子中while的含义:1、Jane was dressed in brown while Mary was dressed in blue.2、While I admit that the problems are difficult,I don't agree that they cannot be solved.3、He fell asleep while(he was) reading a grammar book.

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判断下列句子中while的含义:1、Jane was dressed in brown while Mary was dressed in blue.2、While I admit that the problems are difficult,I don't agree that they cannot be solved.3、He fell asleep while(he was) reading a grammar book.
判断下列句子中while的含义:
1、Jane was dressed in brown while Mary was dressed in blue.
2、While I admit that the problems are difficult,I don't agree that they cannot be solved.
3、He fell asleep while(he was) reading a grammar book.

判断下列句子中while的含义:1、Jane was dressed in brown while Mary was dressed in blue.2、While I admit that the problems are difficult,I don't agree that they cannot be solved.3、He fell asleep while(he was) reading a grammar book.
1.而表示比较
2.即使表让步
3.连词表示正在