[虛擬語氣]非真實條件句
1)虛擬語氣可以表示過去,現在和將來的情況,時態的基本特點是時態往後推移。
a. 與現在事實相反的假設
條件從句 主句
一般過去時(be用were) should(would)等 動詞原形
例如:If they were here, they would help you. 如果他們在這兒,會幫助你的。
含義:They are not here, they can‘t help you.
b. 與過去事實相反的假設
條件從句 主句
過去完成時 should(would)等 have 過去分詞
例如:If he had come yesterday, I should / would have told him about it.如果他昨天來的話,我會把這件事告訴他的。
含義:He did not come yesterday, so I did not tell him about it.
c. 表示對將來不大可能發生的事情的假想
條件從句 主句
一般過去時 should/would等 動詞原形
were 不定式
should 動詞原形
例如:If you succeeded, everything would be all right. 如果你將來成功了,一切都會好的。
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.
含義:You are not likely to succeed, everything will be what it is now.
位律師廻複
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