【—之條件狀語從句】下面就是老師為同學們帶來的條件狀語從句的詳細講解,供同學們學習的參考。
條件狀語從句
1、與現(xiàn)在事實相反
若與現(xiàn)在事實相反,虛擬語氣的條件從句的謂語用過去式(be通常用were),主句謂語用“should (would, could, might)+動詞原形”。如:
If I were you, I would take an umbrella. 如果我是你,我會帶把傘。(事實上我不可能是你)
If I knew her number I could ring her up. 要是我知道她的電話號碼,我就可以給她打電話了。(事實上我不知道)
2、與過去事實相反
若與過去事實相反,從句:主語+had done , 主句:主語+should/would/could/might+have done ,例如:
If I'd left sooner,I'd have been on time. 要是我早點動身,我就準時到了。(但我動身太遲了)
If I had got there earlier, I should/could have met her. 如果我早到那兒,我就會見到她。 (事實:去晚了)
3、與將來事實相反
從句:①if+主語+were to do 主句:①主語+should/would/could/might+do
、趇f+主語+did/were ②主語+should/would/could/might+do
③if+主語+should+do ③主語+should/would/could/might+do
例如:If he went,would you go too? 如果他去,你也去嗎?(大概他不會去)
If he should come here tomorrow, I would talk to him. 如果他明天來這兒的話,我就跟他談?wù)劇?(事實:來的可能性很。
注意與說明:對于與將來事實相反的情形,請注意以下幾點:
一是這里說的與將來事實相反,實為對將來情況的推測;
二是此用法中的條件從句謂語除用過去式外,有時也用“should+動詞原形”(表示可能性極小,常譯為“萬一”)或“were to+動詞原形”(表示與將來事實相反的假設(shè));
三是當條件從句使用“should+動詞原形”這樣的謂語時,主句謂語除可用“should (would, could, might)+動詞原形”這樣的虛擬語氣外,也可用陳述語氣或祈使語氣。如:
I should see him, I'll tell him. 萬一我見到他,我就告訴他。
If it should rain tomorrow, don’t expect me. 萬一明天下雨,就別等我了。
上述是老師為同學們帶來的對條件狀語從句的講解,有不懂得可以參考哦!
本文來自:逍遙右腦記憶 http://yy-art.cn/chuzhong/187283.html
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