Instead of catching fish,they catch old boots and rubbish.这句话中catch为什么要用动词原形为什么catch后面不加es

instead of doing sth原句是：Instead of catching fish they catch old boots and rubbish.改为：They caught old boots and rubbish instead of catching fish.把动词换为过去式,主句提前,那用了过去式，意思表达是不是有点区别 英语语法不懂Instead of catching fish,they catch old boots and rubbish.第一个catch和第二个为什么不是一个时态? Instead of catching fish,they catch old boots and rubbish.这句话中catch为什么要用动词原形为什么catch后面不加es catching. catching instead与instead of区别, instead of 造句 instead of 急 Instead Of You 歌词 noby can instead of instead of的意思 instead of 是什么短语? instead of 的用法 Instead of them. 英语翻译instead of giving Instead Of You 歌词 instead of doing instead of sb