Questions & Answers about yīguì hé shūjià dōu yào ānzhuāng.
Mandarin often drops the subject when it is clear from context.
So 衣柜 和 书架 都 要 安装 can work as a complete sentence even without saying who is doing the installing. Depending on context, it could mean:
- the wardrobe and bookshelf both need to be installed
- we need to install the wardrobe and bookshelf
- someone needs to install both of them
Chinese usually leaves this unspecified unless it matters.
都 means both or all, depending on what comes before it.
In this sentence, it refers to 衣柜 和 书架, so it means:
- the wardrobe and the bookshelf both need installation
A very common pattern is:
Examples:
- 我和他都喜欢咖啡。
He and I both like coffee. - 这个和那个都很贵。
This one and that one are both expensive.
So here, 都 marks that the statement applies to both items.
Because 都 usually comes after the group it refers to and before the predicate.
Structure:
- [the people/things included] + 都 + [what is true about them]
So:
- 衣柜 和 书架 都 要 安装
Not:
- 都 衣柜 和 书架 要 安装
That would sound ungrammatical in standard Mandarin.