we found some boys.they were playing chess.合并为一句合并为一句we () some boys ()()这是运用了什么结构,还有,题干中为什么是were playing,这是什么时态?不是一般过去时直接played么

We found some boys in the room.They were playing chess.(合并为一个句子） A:They're $15.___________?We have some cool T-shirt for boys. we found some boys.they were playing chess.合并为一句合并为一句we () some boys ()()这是运用了什么结构,还有,题干中为什么是were playing,这是什么时态?不是一般过去时直接played么 We saw some boys playing football怎么改被动 We found some easy cuisine in the recipe. we have T-shirts for boys的同义句 改为否定句和疑问句.1.I found an interesting book.2.There were some boys in the room. We haven't found life on other planets yet翻译 But we couldn't find them all为什么不是found Why don't we make some tea? we are on the playground . look some boys are playing football. 3.We saw some boys playing football behind the house.改为被动语态 Look!The boys _____(start) a campfire______.We _____(cook) some food. some boy were found lying on the grass just now(改为一般疑问句）老师说应该是were some boys found lying on the grass just now可是 在疑问句中some 不是要改为any的吗? we are on the playground.look!Some boys are playing football.Some girls are后面怎么填 We can't stand the i___ that boys and girls can't be friends. 短文填空 we usually have three classes in the afternoon .we don‘t go homework after that we havesome （a ）some boys like （p ）football .they （r ）after a ball in the playground some girl like (v ) they play it behind the teaching build we bring the boys