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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) | 
