Question

句型转换 1.They have been talking for the whole three hours.（改成一般疑问句）

1.__ they__ __ for the whole three hours?
2.We played basketball three hours ago.（改为现在完成进行时）
We __ __ __ basketball __ __ __.
3.He has been writing <for forty minutes>.（对划线句子提问 “<>”是划线句子）
__ __ __ he been writing?
4.My mother has been teaching math here for twenty years.（用since改写）
My mother has been teaching math here __ __ __ __.
速度（今天内。。）

Answer 1

1._Have_ they_been_ _talking_ for the whole three hours?
2.We played basketball three hours ago.（改为现在完成进行时）
We _have_ _been_ _playing_ basketball _for_ _three_ _hours_.
3.He has been writing <for forty minutes>.（对划线句子提问 “<>”是划线句子）
_How_ _long_ _has_ he been writing?
4.My mother has been teaching math here for twenty years.（用since改写）
My mother has been teaching math here _since_ _twenty_ _years_ _ago_.
希望有帮助~~

Answer 2

1.Have； been talking
2.have been playing ；for 3 hours.
3.How long has
4.since twenty years ago

希望帮到你~

Answer 3

1.Have. been talking2.have been playing for three hours4.sice twenty years ago第三个？