大學英語六級考試攻克語法

　　1.So many students get failed in the final examination.It is strange that such a thing __1__in your school.It is important that the results of an experiment__2___.

　　1. happens happened

　　should happen had happened

　　2.check and recheck checking and rechecking

　　be checked and rechecked checked and rechecked

　　2.The people who knew him very well said that he was too na ve sometimes.Had he been older,he___1___less sympathetic.But what he had done proved that he was the person,loving life,also a hero who can help others out of trouble.___2___his timely arrival, the boy would have been drowned.That gained respects for him.

　　3.might have been would be

　　might be had been

　　4.But for Even for

　　Except for If not

　　1. 選該題考察表示驚奇、高興、遺憾、擔心等感情色彩的形容詞引起的主語從句中的虛擬語氣的表達。在 anxious,sorry,concerned,happy,delighted等表示感情色彩的形容詞后接的that 從句中，用should來修飾謂語動詞。該句中有strange一次，意為奇怪，表示對事物的驚訝或不滿，it為形式主語，that從句為主語從句，要求從句中用虛擬語氣的表達形式should+動詞原形表示

　　2. 選該題考察its+adj.+that主語從句的虛擬形式。觀察句子結構可以看出這里為Its+形容詞+that從句結構，形容詞important做表語，主語從句需要虛擬形式should+動詞原形，should可以省略

　　3. 選該題考察非真實條件的虛擬。在表示過去情況的虛擬條件句中，條件從句用了過去完成時形式，主句可用should+have+過去分詞的形式

　　4. 選該題考察含蓄條件的虛擬。But for含義為要不是，用于此處可以表達假設條件，but for his timely arrival=If it had not been for his timely arrival或If he had not arrived on time.

　　大學英語六級考試攻克語法

　　1.So many students get failed in the final examination.It is strange that such a thing __1__in your school.It is important that the results of an experiment__2___.

　　1. happens happened

　　should happen had happened

　　2.check and recheck checking and rechecking

　　be checked and rechecked checked and rechecked

　　2.The people who knew him very well said that he was too na ve sometimes.Had he been older,he___1___less sympathetic.But what he had done proved that he was the person,loving life,also a hero who can help others out of trouble.___2___his timely arrival, the boy would have been drowned.That gained respects for him.

　　3.might have been would be

　　might be had been

　　4.But for Even for

　　Except for If not

　　1. 選該題考察表示驚奇、高興、遺憾、擔心等感情色彩的形容詞引起的主語從句中的虛擬語氣的表達。在 anxious,sorry,concerned,happy,delighted等表示感情色彩的形容詞后接的that 從句中，用should來修飾謂語動詞。該句中有strange一次，意為奇怪，表示對事物的驚訝或不滿，it為形式主語，that從句為主語從句，要求從句中用虛擬語氣的表達形式should+動詞原形表示

　　2. 選該題考察its+adj.+that主語從句的虛擬形式。觀察句子結構可以看出這里為Its+形容詞+that從句結構，形容詞important做表語，主語從句需要虛擬形式should+動詞原形，should可以省略

　　3. 選該題考察非真實條件的虛擬。在表示過去情況的虛擬條件句中，條件從句用了過去完成時形式，主句可用should+have+過去分詞的形式

　　4. 選該題考察含蓄條件的虛擬。But for含義為要不是，用于此處可以表達假設條件，but for his timely arrival=If it had not been for his timely arrival或If he had not arrived on time.