3 sentences

1. 这种廉价的名牌包通常都是假货。

   zhè zhǒng lián​jià de míng​pái bāo tōng​cháng dōu shì jiǎ​huò.

   These cheap designer bags are usually fakes.

   Source: Dong Chinese Dictionary

2. 他花了大价钱买这个假货，真是个大头。

   tā huā le dà​jià​qian mǎi zhè​ge jiǎ​huò, zhēn shì gè dà​tóu.

   He spent a lot of money on this fake; he's such a sucker.

   Source: Dong Chinese Dictionary

3. 橱窗里摆放的手机其实是假货，并不能开机使用。

   chú​chuāng lǐ bǎi​fàng de shǒu​jī qí​shí shì jiǎ​huò, bìng bù néng kāi​jī shǐ​yòng.

   The phones in the display window are actually mockups and cannot be turned on for use.

   Source: Dong Chinese Dictionary