While watching TV,----- A the doorbell ring B the doorbell rings C we heard the doorbell ring D we heard the doorbell ri

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• 英语改写句子：用非谓语做状语改写下列句子1.While we were watching the football match,we heard the doorbell ring.2.James was reading a story and was completely lost to the outside world.3.These animals from the tropical areas will die unless they are taken good care of.4.Uncle Li reads newspapers every day so that he cankeep up with the times.5.A small plane crashed into a hillside and killed all four people on board.6.The girl was frightened by the strange noise and dared
• while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard
• while watching television,_______.1 the doorbell rang 2 we heard the doorbell ring
• While watching TV,----- A the doorbell ring B the doorbell rings C we heard the doorbell ring D we heard the doorbell ri
• while walking in the street ,you have to be very careful toavoid__down by passing cars or trucks.a.to be knocked b.being knocked 答案为什么不是a?不应该是将来吗?虽然avoid+doing,可是前面还有while while 的主句不是要+done吗?在什么时候while +done：doing+when?都表示什么?就像这道题while watching tv,___ a.the doorbell rang b.we heard the doorbell ring c.we heard the doorbell rings d.we heard the doorbell rang 如果是B.C.D怎么分析?为什么?
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