usage

It would help if you mention the context for it.

I believe you might mean, “they’re on the market.”
If so, it means “(whatever the topic is) are being sold currently somewhere.” (They are available somewhere – at stores, online, by mail, etc.)
If, instead, you mean, “there on the market”, it would be necessary to hear the rest of the sentence.

wilpeterI believe you might mean, “they’re on the market.”If so, it means “(whatever the topic is) are being sold currently somewhere.” (They are available somewhere – at stores, online, by mail, etc.)If, instead, you mean, “there on the market”, it would be necessary to hear the rest of the sentence.

1. We do not know what products there are on the market.

Thein Lwin 7291Please explain

"don't know" takes an indirect question as its complement. That's what you want here.

Direct question: What products are there on the market?
Indirect question: ... what products there are on the market.

Direct questions have inverted subject-verb order. Indirect questions do not. Direct que

Dear CJ, I understand what you mean. But in my sentence, the structure of the clause 'what products are there on the market' is 'what products (sub) + are (v) + there on the market (adv)'. Is it possible or not? Thanks again.

Thein Lwin 7291the structure of the clause

Ah, yes. You need to know a little more about that. The "there-construction" is quite exceptional. It's the only construction in English with the peculiarity of having, in effect, two subjects.

Example: There are several products on the market.

1. For purposes of subject-ver