1decrease to减少到

　　decrease by减少了,decrease from...to...从……减少到……

　　decrease in sth.在……方面降低；减少

　　2on the decrease在减少

　　(1)The club’s members have decreased to two hundred.

　　该俱乐部的会员已减少到了200人。

　　(2)There has been a decrease in the number of pandas these years.近年来大熊猫的数量已经减少了。

　　多维训练

　　单句语法填空

　　(1)The number of car accidents is on the decrease.

　　(2)By the end of the study，that percentage had decreased by half，to 45 percent.

　　(3)We have no idea when the housing prices decrease to the level we can afford.

　　(4)There has been a decrease in our imports over the years.

　　7

　　operate v.经营work；动手术；操作机器control；机器运转function；运作

　　1operate on/upon sb.给某人动手术,

　　2operation n.操作；经营；手术；运算

　　be in operation在运转；在行动中；在实施中

　　come into operation开始工作生效

　　put...into operation实施；实行

　　3operator n.电话接线员

　　(1)The department store is well operated.

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