1. I have been there (here,there,home之类的词前面不加介词)
2. We have been to Shanggai mant times (have gone to 是去了还没有回来 have been to 是去过的但是已经回来了)
3. Have you known her for a long time (ago是过去时的提示词 一段时间用于现在完成时应该用 for a long time)
: ) 希望对你有帮助
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024