高二英語：虛擬語氣講解
導語：高中英語語法中的虛擬語氣包括了在條件句、名詞性從句等中的應用，是英語學習中的一個難點語法，一下是具體內容：
虛擬語氣用于條件狀語從句中
(1)表示與現(xiàn)在事實相反的假設，條件狀語從句中的謂語動詞用"過去式(be動詞的過去式用were)"，而主句中的謂語動詞用"would / should/ could / might + 動詞原形"。如：
If I were a boy, I would join the army.
If the had time, she should go with you.
(2)表示與過去的事實相反，條件狀語從句中的謂語動詞用過去完成時，主句中的謂語動詞則用"would / should / might / could + have +過去分詞"。如：
If he had taken my advice, he would have succeeded in the competition.
(3)表示與將來事實相反，條件狀語從句中的謂語動詞一般過去時或should(were to) + 動詞原形，而主句中的謂語動詞則用would / should/
could might + 動詞原形。如;
If it were to rain tomorrow, the football match would be put off.
(4)當條件狀語從句表示的行為和主句表示的行為所發(fā)生的時間不一致時，動詞的形式要根據(jù)它所表示的時間作相應調整。如：
If they had worked hard, they would be very tired.(從句說的是過去，主句指的是現(xiàn)在)
(責任編輯：楊旭杰)
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