tuōpán lǐ yǒu jīshuǐ.

There is standing water in the plant saucer.

Breakdown of tuōpán lǐ yǒu jīshuǐ.

• 有yǒu: to have
• 里lǐ: inside
• 托盘tuōpán: plant saucer
• 积水jīshuǐ: standing water

Questions & Answers about tuōpán lǐ yǒu jīshuǐ.

What grammar pattern does this sentence use?

It uses the very common Mandarin pattern:

Location + 有 + thing

So here:

• 托盘里 = in the tray
• 有 = there is / there are
• 积水 = standing water / pooled water

A very literal English gloss would be:

In the tray, there is standing water.

This pattern is one of the main ways Mandarin expresses there is / there are.

Why is 有 used here? Doesn’t 有 usually mean to have?

Yes, 有 can mean to have, but it also has an existential use, meaning there is / there are.

In this sentence, it does not mean that the tray possesses something in an owner-like sense. It means that something exists in that location.

Compare:

• 我有一本书。 = I have a book.
• 桌子上有一本书。 = There is a book on the table.

So in 托盘里有积水, 有 means there is.

Why can’t I use 是 here instead of 有?

Because 是 is used to link one thing to another, like A is B.

But this sentence is not identifying the tray as standing water. It is saying that standing water exists in the tray.

So:

• 托盘里有积水。 = There is standing water in the tray. ✔
• 托盘里是积水。 = unnatural in normal usage ✘

If you use 是, it sounds like you are saying what is in the tray is standing water, which is not the normal way to express this idea.