If I were you,I'd go to the park.
如果我是你,但這是不可能的,所以用虛擬語(yǔ)氣
If it rains,I'll go to the park.
If it rained,I'd go to the park.（現(xiàn)在正在下雨）謝謝你！那請(qǐng)問(wèn)：If there were a heavy snow next Sunday，we would not go skating.這里there和would為什么不是 is 和will 呢？當(dāng)然是可以用is和will的，一般虛擬語(yǔ)氣肯定有語(yǔ)境，不會(huì)無(wú)緣無(wú)故的讓你填虛擬如果發(fā)生的幾率比較小這里是不是就要用were和would了？除非你已經(jīng)相當(dāng)確定下個(gè)周日下大雪才用虛擬應(yīng)該是不怎么確定才用虛擬吧？一點(diǎn)確定，不然怎么會(huì)是假設(shè)呢還是用上面的例子：If I were you,I'd go to the park.因?yàn)槲乙欢ú豢赡苁悄?，所以用了假設(shè)因?yàn)橐欢〞?huì)下大雪，所以假設(shè)不下大雪用虛擬