彼は彼女が何を言っているか理解できないようだ。の英語

He does not seem to be able to catch on to what she is saying.

She doesn't seem to be able to catch on to what he is saying.

She found it impossible to understand what he was saying.

She didn't know what to say to him.

I cannot understand the things that he is trying to say.

She didn't know what to say to him.

I can't understand what she says.

He had no idea as to what she had in mind.

He cannot possibly believe her.

He possibly cannot believe her.

I cannot understand what he wants to say.

She cannot have understood what you said.

I can't make out what she said.

I can't make out what she is saying.

I don't know what he is saying.

I don't understand what he is saying.

I don't understand at all what he is saying.

Whatever he is saying is nonsensical.

I could hardly make out what she said.

I can't make out what she said.

He just stared at her without saying anything.

He could not comprehend the value of her advice.

I can't make her out.

I can't understand what she says.

I tried to understand what she wanted to say, but I couldn't.

Can you make out what he is trying to say?

Can you make out what he is trying to say?

I don't know what he is saying.

He has no [has not the slightest] notion (of) what I mean.

She doesn't understand what I want to say.