How much are the watermelons?

这些西瓜多少钱？

Watermelons are dear in winter.

西瓜在冬天卖很贵。

Do watermelons grow on trees?

西瓜是长在树上的吗？

Watermelons are very cheap here.

这里的西瓜很便宜。

How many watermelons can you see?

你能看见多少个西瓜？