since+时间点可以用于过去完成时吗?可以举例?

since+时间点可以用于过去完成时吗?可以举例?
since+时间点可以用于过去完成时吗?可以举例?

since+时间点可以用于过去完成时吗?可以举例?
在宾语从句中是可以的.
He told me that he had made a lot of new friends since he came to China
had made a lot of new friends 发生在told me前