建议修改如下:
I came back to China already two months ago, and during this period I have had to deal with lots of teaching and administration work.
前半截加了ago,后面半截的时态改为现在完成时
建议修改如下:
I came back to China already two months ago, and during this period I have had to deal with lots of teaching and administration work.
前半截加了ago,后面半截的时态改为现在完成时