例句：

　　He was still smiling when the door opened and his wife came in.

　　他正笑著的時(shí)候門(mén)突然開(kāi)了，他妻子走了進(jìn)來(lái)。

　　We were about to start when it began to rain.

　　我們剛要出發(fā)，天就開(kāi)始下雨了。

　　He had not fallen asleep when the telephone rang.

　　他剛要入睡電話就響了。

　　I had just gone to bed after a very hard day when the phone rang.

　　在勞累了一天之后我剛剛就寢，電話鈴就響了。