主动　　　　　　被动

一般现在时　 does is done

一般过去时　 did was done

现在进行体　 is doing is being done

过去进行体　 was doing was being done

现在完成体　 has done has been done

过去完成体　 had done had been done

现在完成进行体　has been doing

过去完成进行体　had been doing

不定式　　　　　 主动　　　　　　　　　被动

一般形式　　　　(to) do　　　　　　　(to) be done

进行体　　　　 (to) be doing 　　　　　　　　　

完成体　　　　　　 (to) have done(to) have been done　　　　　　　　　

完成进行体　　　　 (to) have been doing　　　　　　　　　

-ing分词　　　　　主动　　　　　　　　被动

一般形式doing being done

完成体 having done having been done

It is only when you nearly lose someone that you become fully conscious of how much you value him.?（强调）
Just as the soil is a part of the earth,　so is the atmosphere.?正如…，…也…
none other than意为“不是别人，正是…”

lenses镜片
glasses眼镜
sights视野；风景
crystals水晶，晶体

You should have your eyes tested every year in case the lenses of your spectacles need changing.

turn up出现，露面
turn in归还，递交
turn out原来是，证明是
turn to求助于；求教于
hang out 把……挂出
hang up 把……挂起，挂断(电话)
hang together 结合在一起
hang round 闲荡
collaborate合作，合著in collaboration with
compile汇集；编辑
gather聚会，集会
collect意为“收集；集合

When Sarah and I collaborated　on an article for the school newspaper, we found it difficult to work together.?

fee　费(如会费，入场费，手续费等)　
tax　税，税款
payment　支付，付款
premium　津贴；酬金
aid辅助器具　
translate变换，把…转化成
help帮助　
transfer移交，迁移
support支持　
transplant移植(器官)
tool工具　
transmit传染(疾病)，传达(知识)