when“正在那时”的用法.ppt

* when 表示“正在那时/这时 （突然）” =at that/this time 的用法小结 A. when 前面的分句使用过去进行时。 如: ( 1 ) He was still smiling when the door opened and his wife came in. 他正笑着，正在这时,门突然开了,他妻子走了进来。 ( 2 ) I was thinking of this when I heard my name called. 我正想着这件事，正在这时,突然听到有人叫我的名字。 B. when 前面的分句使用 was (were) about to, was (were) on the point 等。表示：正要做......这时/那时......（另一个动作发生了） 如: ( 1 ) We were about to start when it began to rain. 我们正要出发，就在这时开始下雨了。 ( 2 ) He was on the point of leaving when someone knocked at the door. 他正要离开，就在这时有人敲门。 C. when 之前的分句使用过去完成时,其中 sb had hardly / scarcely /barely … when 表示“刚刚完成 ......（前一个动作），就在这时......（后一个动作发生了）” 如: ( 1 ) We had hardly fallen asleep when the bell rang. 我们刚刚入睡,就在这时铃声响了起来。 ( 2 ) He had scarcely arrived when he had to leave again. 他刚刚到达，就在这时又要离开了。 即：when 用于以下结构中表示： “正在这时/那时” 1.be doing ... when ... 正在做......这时/那时......（另一个动作发生了） 2.be about to do... when... 正要做......这时/那时......（另一个动作发生了） 3.be on the point of doing ...when... 正要做......这时/那时......（另一个动作发生了） 4.had just done ...when ... 刚做完某事，这时/那时......（另一个动作发生了） 1. I had finished my homework and _____watch the olympics when the power was cut off. A. was going to B. was about to C. was to D. would B 2.We were getting in the wheat____suddenly it poured with rain. A. While B.when C.as D.before B 3. She had just finished her homework____ her mother asked her to practice playing the piano yesterday. A. when B. while C. after D. since A 4.They were discussing the problem ___ the teacher came in. A. when B. while C. after D. since 5.Jenny was holidaying with her family in a wildlife park ______she was bitten on the leg by a lion. A. when B. while C. since D. once 6.He was about to tell me the secret ______ someone patted him on the shoulder. A. as B. until C. while D. when A A D 7.She opened her eyes and was about to cry out____ she heard her fa