The thing(s) thatをwhatに置き換えられるケースを身につけよう

これはそれだ。 This is the thing

I expected this.

This is the thing that I expected.

→This is what I expected.

This is not what I wanted.

That is not what I want to know.

This is not what I heard.

Is this what you want?

Is this what you want to know?

Is this what I ordered?

I couldn't believe what he said.

I couldn't understand what he was talking about.

I gave her what she wanted.

I told her what she wanted to know.

I told you what I knew.

I know what you mean.

Show me what you have in your hand.

Did you understand what he said?

Do you know what I want?

Do you remember what I told you?

Do you have what I gave to you?

Do what you want to do.

You can choose what you like.