while引导的时间状语从句时态变化（eachtime等引导时间状语从句）

each time可以作为连词（从属连词）表示：每一次……的时候；相当于when。类似用法的连词还有：every time, the moment, the instant, the minute, the second、the year、next time、（the）last time、the first time等，如：

Each time I tried to help I was repulsed.

每次我想要帮忙都遭到了拒绝。

repulse [rɪˈpʌls]

vt.排斥;击退;使厌恶;使反感;打垮;驱逐;拒绝接受;回绝

n.拒绝;击退;反击;打退

Each time we scored we were pegged back minutes later.

每次我们得分，几分钟后便被追上。

peg [peɡ]n. 挂钩，挂钉钉子;楔子，橛子，短桩;

V. 用钉（或桩等）固定，用夹子夹住，用楔子钉住;使工资、价格等固定于某水平（或与…挂钩），视为，看做;勾回，疾行;坚持不懈地奋力干，把…认定标出，把…归类;

They complimented me on the way I looked each time they saw me

每次见到我，他们都称赞我的外貌。

Each time the product changes, the machines have to be retooled.

每次更换产品，就得重新装备机器。

retool[ˌriːˈtuːl]

v.更换，重新装配(机器设备);重新安排;重组

The colours gently fade each time you wash the shirt

衬衣每洗一次都会褪点色。

fade [feɪd]

v.褪色;凋谢;逐渐消失;（车辆的刹车因摩擦发热而）暂时失灵;（使）（电影或电视画面）淡入（或淡出）另一画面;变得默默无闻;（高尔夫球）偏离直线

n.淡入，淡出;褪色，变暗

adj.平淡的，乏味的

This was surely a magic formula for Old Fan as his head ached each time he heard it.

对老范来说，这就是紧箍咒，每回一听说起保管（一定，准能）头痛。

magic [ˈmædʒɪk]

n.魔术;魔法;神奇;魔力;魅力;巫术;法术;戏法

adj.神奇的;有魔力的;(施)巫术的;有神奇力量的;美好的;好极了;棒极了

vt.(像)用魔法变出(或使消失、使变成…等)

formula [ˈfɔːrmjələ]

n.公式;方程式;计算式;计划，方案;配方，处方;分子式，结构式;配方奶;(日常礼节用的) 惯用语句，俗套话;(尤指机械遵循的) 惯例，常规

He announced that it would henceforward be the custom to give him five rands each time a cow was slaughtered.

他宣布今后每屠宰一头母牛就要按规矩给他5兰特。

henceforward [ˈhɛnsˈfɔːwəd]

adv.从今以后;此后

Each time you remember the new PIN, you gradually forget the old one.

每一次当你记住新卡的个人识别号码时，你就会逐渐忘记旧卡的。（四级真题）

Each time this initial memory trace is "replayed", it becomes even stronger.

初次记忆轨迹每被“重播”一次，记忆就变得越来越强大。（四级真题）

Each time I see you ,I will remember the happy time we spent together.

每一次我见你，就会想起我们一起度过的快乐时光。

If individuals are awakened each time they begin a dream phase of sleep, they are likely to become irritable even though their total amount of sleep has been sufficient.

如果睡眠的人每一次进入梦乡时，就被人叫醒，那么即使他们睡眠的总量是足够的，他们也可能变得烦躁易怒。

phase [feɪz]

n.阶段;时期;月相;(月亮的)盈亏

vt.分阶段进行;逐步做

当然，each time也可以直接做个短语，表示每次：

He went camping with a knife stuck in his belt each time.

他每次去露营都佩带腰刀。

I called at his house twice, but he happened to be out each time.

我找他两次，偏巧都不在家。

Every time I hear that song I feel happy.

我每次听到那首歌都感到很愉快。

I had to change schools every time my parents flitted.

我父母每次迁居，我都得换学校。

Every time a train went past the walls vibrated.

每当火车驶过，这些墙都会震动。

Every time a bus went past, the windows rattled.

每逢公共汽车经过这里，窗户都格格作响。

Every time she heard his name, she dissolved into tears.

每当听到他的名字时，她都禁不住泪流满面。

My computer crashes every time I disconnect from the Internet.

我每次断网，计算机都会突然死机。

I'm fed up of seeing the same old faces every time we go out!

每次参加社交活动都只见到那些旧面孔，我都腻了。

Steve kicks up a fuss every time I even suggest seeing you.

每次只要我提议看望你，史蒂夫就大吵大闹。

You don't have to go running upstairs every time she rings

用不着她一来电话你就往楼上跑。

Don't come bleating to me every time something goes wrong.

不要一有问题就跑来向我哭诉。

Every time they went dancing they ended up in a bad mood

每次他们去跳舞，都会不欢而散。

It seemed as though every time we got rolling something came along to knock us back

每当我们开始着手行动的时候，好像都会出点什么事来拖我们后腿。

Every time she travels on the bus it's delayed by at least three hours

每次她乘公车出行都至少耽搁3个小时。

Every time he put any weight on his left leg he winced in pain

只要左腿一受力，他就会疼得龇牙咧嘴。

Every time she consulted her watch, she wondered if the batteries were wearing out

每次她看手表，都会怀疑是不是电池没电了。

Every time we get a new delivery of clothes, people are queuing to snap them up

每次新到一批服装时，人们都在排起长队来抢购。

You don't ask people to fork out every time they drive up the motorways

不能要求人们每次开车上高速公路都要交费。

Every time they met, Myra anticipated an explosion

他们每次见面，迈拉都预料到会发火。

Every time I catch sight of myself in the mirror, I feel so disappointed.

每次我瞥见镜子里的自己就觉得沮丧。

You are playing Russian roulette every time you have unprotected sex.

行房时不采取避孕措施是非常危险的。《柯林斯高阶英汉双解学习词典》

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