in this period of time用什么时态

用与现在时间相关的事态。中文意思是在这段时间里

In this period of time I have been so busy looking after my children that it has been impossible for me to feel unemployed.

现阶段，我忙于照顾我的孩子，因此我并没有失业的感觉。

Even in this period of time after a long time for the past for a long time， I also want to tell you， you for me is priceless.

即使在这段岁月过去以后好久好久之后，我也想告诉你们，你们对我来说是无价之宝。

While in this period of time， many results about Fu study are achieved that provide us with great help for compiling and revising the book.

但是这期间辞：研究却有很多成果出版，给这部大书的编写和修改提供了很大的帮助。