While Tom was playing with the balloon,he saw a plane ___ (fly) over his head.

What was Tom doing____it was rain 填while 为什么要填while呢. the students were listening carefully( )into the classroomA.when Tom rushed B.when Tom was rushingC.while Tom rushed D.while Tom was rushing Tom was ____(hurt) while he was playing soccer.And now his cut is ____(hurt) Tom was rich __his brother was very poor while 和but 选哪一个 下面两个句子哪一个正确?I met Tom while I was shopping.I met Tom when I was shopping. While the meeting was giong on,Tom came in 求翻译啊 是不是：正在开会时 TOM进来了? 英语翻译Tom worked in the garden while I was sitting in the sun. Tom cut _____badly while he was shaving this morning空格处应该填什么?为什么~勿笑~ while Tom saw the UFO,he was walking down the street with his friends有一处有错, While Tom was playing with the balloon,he saw a plane ___ (fly) over his head. Tom was doing his homework——his mother was cooking选填when或者while,并说明理由 老师 还有Tom was doing shopping when her mother called her up.可以while her mother was calling.. While Tom and mary we It was a while before Tom could appreciate the joke .while在句子中的作用,句子成分各有哪些,怎么翻译? strange enough,tom ate the biggsst breakfast __he was not hungryA while B though C if Dhowever Last night ,Jane was doing the laundry while Tom and Jim （）（wash）the dishes.动词填空 It was a while before Tom could appreciate the joke .语法结构、句子成分—主谓宾各是什么? 对画线部分提问（Tom was playing ping-pong when l left.)Tom was playing ping-pong when l left.-------------------- ----- Tom ----- ping-pong?关键是时态啊,用while还是when?