"He wants to buy some toys but his family is too poor," said the boy.

“他想买一些玩具，但他的家庭太穷了。”男孩说。

youdao

He wants to buy not a skirt, but a dress.

他想买的不是一条短裙，而是一条连衣裙。

youdao

She has extra food to sell and he wants to buy it.

她有多余的食品要销售，而他需要购买它。

youdao

He says he wants to buy a house for his son so that he can get married, but does not have the money.

VOA: standard.2010.06.29

You could use the "what do you" pattern in order to ask which article he wants to buy.

你可以用“What do you”句型来问男友他想买哪一个。

What do you 课堂 - SpeakingMax英语口语达人

Just a few meters from the door is Riley Hunter, who says he has no idea what he wants to buy, and the line is moving fast.

VOA: standard.2010.02.17

Instead, he wants to buy bonds with as little connection to Treasuries as possible.

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Now he wants to buy the Arizona condos and resell them for a 20% discount from current price tags.

FORBES: Magazine Article

Flowers has said he wants to buy all of Refco, much of which has entered bankruptcy proceedings in a New York court.

FORBES: IBG Makes A Play On Refco's Futures Business