现在完成时专练:用have,has been to,in,have gone to及go的各种形式填空

John ___English since he came back.这题English用词似乎有点问题
How long_have__they_been in__this village?
The Smiths _have been in__Beijing for years.
_Have__you ever _been to__America?--Yes,I_havebeen__there many times.
I _have been in__this school since three years ago.
Where is Jim?He _has goneto__the farm.
When _did__he _go__?He _went__ an hour ago.
Would you like to _go__to the zoo with me?--Yes,but I_have been__there before.
首先,have has的用法与主语有关,has属于第三人称单数形式,主谓一致嘛.
其次,have /has been to的意思是“去过”,have/has been in的意思是“从过去的某一时间开始到现在一直在某地方”,have/has gone to的意思是“去某地了（还没回来）
When _did__he _go__?He _went__ an hour ago.
When指特定的时间,结合后面的时间状语an hour ago应该用过去式
Would you like to _go__to the zoo with me?--Yes,but I_have been__there before.
Would you like to dosth固定短语,后面的意思是：好的,但我以前去过. 再问： 答案是怎么样的？