在‘’Is Watching TV a Good Thing‘’中,为什么be动词is要放在句首?

请问Many students are watching TV与Many a student is watching TV有啥子区别?后者错在哪呢? Her hobby is A watch Tv. B. whites TV. CHer hobby isA watch Tv. B. whites TV. C watching TV Tom often ___ TV on Sundays. Today is Sunday. He ___ TV now.A. is watching;is watching B.watches;watches C. watches; is watching D.is watching; watches;watches C watches;is watching D. is watching; watches jim's family ___ watching tv A.is B.are 英语作文 Is watching Tv a good thing? my hobby is ____ TV(A watching B to watch) Jenny is watching a tv show.(改为否定句) My father is watching TV.对 is watching TV提问 nobody is watching tv.please_____________it_______________. Is watching TV too____bad____your health? 在‘’Is Watching TV a Good Thing‘’中,为什么be动词is要放在句首? his mother is watching tv 对watching tv 提问 It's seven o'clock.Tom's family______ TV.A.is watching B.are watching I with my sister ( ) TV in the living room.A.are watching B.is watching He Always A.watch B.is watching C.watches D.watching tv after work Jim, with his cousin ()TV now. A are watching B is watching peter is watching a tennis match on TV.改为一般疑问句---------------- ----------------------- --------------------a tennis match on TV. ( )7.I with my sister _______ TV.A.are watch B.are watching C.am watching D.is watching