If the paper factories go on putting the waste water into the
river,the fish will be stop in their tracks.________
They stopped to work and went to have lunch.________
答案:
stop→stopped to work→working
【精讲拓展2】
(1)track v.跟踪n.踪迹,跑道,车辙
(2)track down追踪到,追查到
(3)on the track of跟踪
(4)keep/lose track of sb./sth.与……保持/失去联系;了解/不
了解……的动态;掌握/失去……的线索
(5)track the plane by radar用雷达追踪那架飞机 28 28 29 29 【典型例句】 The dog tracked the wolf to its lair.
狗追踪那匹狼一直到它的巢穴。 I finally managed to track down the book you wanted in a shop near the station. 我在车站附近的一家书店里终于找到了你想要的那本书。 Police are on the track of a gang that has robbed five post offices in the last month. 警察正在追踪过去一个月里抢劫了五家邮局的一帮匪徒。 即学即用 He tries hard to keep ________ the two pandas:Tuan Tuan and Yuan Yuan. A touch of
B.track of
C.the track
D.the track of 解析:keep track of...“了解……的动态;跟踪……的进展”,所以答案为B。 答案:B 30 重点句型 1.Having killed up to 50 million people in 18 months,with
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