亚洲第一极品精品无码久久_无码国产色欲xxxx视频_国精品无码一区二区三区在线蜜臀_日韩av无码精品一二三区

與現(xiàn)在事實(shí)相反的虛擬語氣

請(qǐng)看下面的題目：

If he was here，he __________ us how to do it.

A. told                        B. would tell                        C. had told                        D. have told

此題應(yīng)選 B。該題考查與現(xiàn)在事實(shí)相反的虛擬語氣：此時(shí)條件從句的謂語動(dòng)詞用過去式，主句的謂語則要用 would (should，could，might)+動(dòng)詞原形：

If there were no subjective mood，English would be much easier. 要是沒有虛擬語氣，英語就會(huì)容易得多了。

If I knew his telephone number，I would ring him up. 我要是知道他的電話號(hào)碼，我就給他打電話了。

在虛擬條件句，動(dòng)詞be的過去式通常用were(不管是單數(shù)還是復(fù)數(shù))，但在現(xiàn)代英語，單數(shù)情況也可以用was：(www.hz123456.com)

We could ask him if he were [was] here. 他要是在 這里，我們就可以問問他了。

但是在某些表達(dá)(If I were you，as it were等)中，be只用were這一形式：

If I were you，I should go and see the doctor at once. 假若我是你，我會(huì)馬上去看醫(yī)生。

The sky is covered，as it were，with a black curtain. 天空好像是被黑幕遮住了似的。

有時(shí)在虛擬條件句也可能用 could，might 等，那多半是因?yàn)檎Z義的需要：

If he could help you，he would help you. 要是他能夠幫助你的話，他會(huì)幫助你的。