I can't explain the reason for his conduct.とは 意味・読み方・使い方

His reason for not going is still unclear.

I cannot understand that reason.

I can't figure out why he said so.

for some incomprehensible reason

I don't know understand why he said that.

I cannot figure out why he has done that.

I can't understand why he did that.

I can't figure out why he did it.

But how that comes about I am at a loss to explain.

I am ignorant of the reason for their quarrel.

I don't know why they are fighting.

I see no reason why I shouldn't put it into practice.

I don't know the cause of that malfunction.

I don't understand the reason why I cannot pay.

I don't understand the reason this phenomenon occurs.

We do not know the clear cause of that.

I don't see any reason why I have to apologize.

I don't see any reason why I have to apologize.

I don't know the reason for her absence.

I don't know why they are fighting.

I don't understand the meaning of that.

The reason why he did it is unknown.

I can tell you the reason at full length.

I cannot understand why his attitude changes so suddenly.

I don't see why he is so angry.

How he manages to keep alive, is more than I can tell.

I explained the reason in detail.

I don't know why he was late.

I have no idea what the reason is.

We can't understand why she said such a thing.