fish的是單數(shù)還是復(fù)數(shù)

　　例句

　　The fish lay thousands of eggs at one time.

　　這種魚(yú)一次產(chǎn)卵數(shù)千個(gè)。

　　These fish are found in shallow waters around the coast.

　　這些魚(yú)生長(zhǎng)在海邊淺水水域。

　　I've never been a great one for fish and chips.

　　我從來(lái)不是個(gè)好吃炸魚(yú)薯?xiàng)l的人。

　　There are about 30 000 species of fish in the world.

　　世界上約有3萬(wàn)種魚(yú)。