while i was reading in the street,i happened to meet jack.前一句 in和street之间为什么加THE?这是固定用法吗?还是特指什么的?

While she was reading,I was watching TV 对吗was reading While she was reading,I was watching TV 对吗was reading I was doing my homework while my father was reading newspapers为什么填while I was playing the piano when I was reading nespaper.这里到底用when还是while. 状语从句,必须要有主语吗?比如：while I was reading ,my tears came to my eyes .这个句子,状语从句While I was reading 可不可以改成While reading (省略I was)? While I （was watching） TV,my mother （was reading） books 这句话对吗? While my wife was reading the newspaper,I was watching TV. I was reading ___ I heard someone calling my name.A while B when While I ___ a novel,someone ___at the door.A.read,was knockingB.read ,knockedC.was reading,knockedD.was reading,was knocking为什么? While I was just reading a book ,she came into my room.主句是什么? I 什么 to music while my father was reading the evening paper.(listen) I was doing the house work while he was just sitting there reading the newspaper.这个句子中reading 为什么read后要加-ing 形式啊 I don't like the book.It was( ).Yesterday I got ( )while reading it and fell asleep.(bore) While i was reading i heard someone____at the door of partiesA knocked B knocks C to knock D knock I heard someone __ for help while I was reading a novel at homeA cryingB cryC criesD to cry he was drawing something on the desk (while) i was reading a story yesterday.这个句子能不能用when代替while?解释为什么? when和while有什么区别?怎么课本的是 I did my homework while I was reading a book.而 练习是 I was而 练习是 I was doing my homework while I was reading a book.究竟是前后都是过去进行时 还是while加过去进行时啊?.. My brother was reading while I did my homework.while后面不是接延续性动词吗,为何用did my homework?My brother____ while I ____.A.reads;was doing my homework B.read;did my homeworkC.was reading;was doing my homework D.was reading;did my ho