if引導(dǎo)的條件狀語從句過去時態(tài)(if引導(dǎo)從句的三種時態(tài))

條件狀語從句，即滿足某條件，動作才發(fā)生的句子。

條件狀語從句的邏輯

最常見的條件狀語引導(dǎo)詞是if，還有unless, whether or not, in case (that), on condition that, provided, 還有隱含條件關(guān)系的but for，without等。

條件狀語從句引導(dǎo)詞

真實條件句，表現(xiàn)的是說話者的真正意圖。

• If you study harder, you will enter a good college. 如果你更努力得學(xué)習(xí)，你就能考入好大學(xué)。

• If you love me, I will love you in turn. 如果你愛我，我將以愛回應(yīng)你。

虛擬條件句，表示說話人的假設(shè)

• If you were to give birth to a baby, I would die. 你敢生老二，我就敢死。

生二胎得尋求老大的理解

• If he had arrived one minute later, she would have jumped. 如果他再晚來一分鐘，她就可能跳下去了。

• I will not speak with you unless you cut the ties with her. 除非你和她斷交，我不會跟你說話。

• Unless miracle happens, the factory will close. 除非發(fā)生奇跡，否則工廠得停業(yè)了。

• Chain reaction happens on condition that there is extremely high temperature and pressure. 只有在極端的高溫高壓的條件下，鏈式反應(yīng)才會發(fā)生。

• This will will be valid on condition that the applicant is dead, 在申請人死亡的條件下，本遺囑才能生效。

• She will not give you a glimpse whether you help her or not. 無論你幫不幫她，她都不會正眼瞧你。

• They will not betray his master whether you threaten them with death or not. 無論你用不用死亡威脅他們，他們都不會背叛他們的主人。