进屋用英语怎么说

ls的都有问题嘛~~应该是Please knock at the door before you enter the room

He went into the room and turned on the light.

Please knock before you come in the room/house看你说的是房间还是房子

He walked into the room and turned on the light.He went into the room and turned on the light.

Please knock on the door before you come in.

Please knock before you enter

knock before entering进屋请先前敲门 ---will

knock the door before you entre in,please

Come in，please！请进！