2016-2017学年北师大版必修1 unit3 Celebration lesson4 课件 (4)-302edu教育资源网

2016-2017学年北师大版必修1 unit3 Celebration lesson4 课件 (4)

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1. After lunch, the adults slept on the sofas … while we all played cards.

He is strong while his brother is weak. 他长得很结实，而他弟弟却很瘦弱。

（1）while 而

Some people waste food while others　haven't enough. 有些人很费粮食，然而有些人却吃不饱。

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