该句中的“while"用作并列连词．表示前后对比，意为

　　“然而”。while 用法总结

　　（1）用作并列连词．表示前后对比，意为

　　“然而”。I like tea while she likes coffee. 我喜欢喝茶,而她喜欢喝咖啡。用作连词．引导时间状语从句。意为“during the time that…”I'll take care of your children while you are away. 你不在时我会照顾你的孩的。 用作连词引导让步状语从句，意为“although…While he is not a perfect man , I still like him very much.

　　尽管他不是一个完美的人我还是很喜欢他。

　　(4) 用作连词引导状语从句，意为

　　课内题例

　　1.Snow was falling when they went along a mountain path ___ to the front.

　　A. to lead  

　　B. led  

　　C. leading   

　　D. being led

　　变式1. They set up an ____ table in a small temple to operate on the ___ soldiers.’ A. operating ;wounded   B. Operated ;wounding   C. operated ;/wounded    D. operating ;wounding

　　变式2. Betty, still ______ excited, took away the box ______ with birthday presents for her.

　　A. looked; filled B. looked; filling C. looking; filled D. looking; filling

　　变式3. This is an early church, ______ from the ninth century, which was rebuilt under the direction of San. Carlo Borromeo.

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