This is what he told us.

这是他告诉我们的。

This is what takes place to solve a crime.

这是解决犯罪的过程。

This is what started the British love of gardening!

这就是英国人热爱园艺的原因！

This is what I want, exactly.

这就是我想要的，没错。

They say this is what causes aging.

他们说这就是导致衰老的原因。

This is what motivation or the lack of it can do.

这就是动机或缺乏动机所能做的。

Put on your coat, or you will catch a cold! This is what my mum often says to me.

穿上外套，否则你会感冒的！这就是我妈妈经常对我说的话。

This is what he said.

这就是他所说的话。

Alas, this is what ah?

唉，这是哪啊？

This is what a bacterium is.

这就是细菌。