將來時虛擬語氣

1、學習好資料歡迎下載與將來事實相反的虛擬語氣請看下面的題目:If we 200 years old，we everything.A. were to be， could changeB. had been, changedC. were， would have changedD. should be， changed此題應選A。該題考查與將來事實相反的虛擬語氣，此時的主句謂語通常用would(should，could， might) +動詞原形，而從句謂語可能有以下幾種情況：1. 從句謂語用過去式：If your father knew this，he would be angry.要是你父親知

2、道了，他會生氣的。If it rained tomorrow，the sports meet would be put off. 明天下雨，運動會就推 遲。2. 從句謂語用should+動詞原形(通常指可能性極小的事情，一般譯為“萬一”)：If it should rain，the crops would be saved. _要是有雨，這莊稼還有救。此類句型的主句謂語有時可以用祈使句甚至將來時態(tài)：If it should rain tomorrow，don' expect me.萬一明天下雨，就不要等我了。If I should be free tomorrow，I will com

3、e.萬一我明天有空，我就來。3. 從句謂語用 were to+動詞原形(通常指可能性極小可或近乎不可能，有時指出乎意 料)：If the sun were to rise in the west，my love for you would not change.即使太陽從西邊出，我對你的愛也不會變。動名詞和不定式做主語的相同點1. 不定式短語和動名詞做主語時，常常為了保持句子的平衡，用it來做形式主語，如：It is not easy to lear n En glish well.It is no use ask ing him for help.2. 如果主語用了不定式，表語和賓語也要用不

4、定式；主語用了動名詞，表語和賓語也要用動名詞 這在英語中稱為對稱性，如：To see is to believe. = Seeing is believing.(眼見為實 )(85)lt is better to stay home tha n _A_ out.A. to goB. goingC. go D. gonen .動名詞和不定式做主語的不同點1. 不定式做主語常表示具體的某一動作；表示泛指或一般的抽象的概念時，多用動名詞，如：(92) _B_ is a good form of exercise for both young and old.A. The walkB. Walki n

5、gC. To walkD. Walk2. 在” There/It +be+ no use(good/help/need) ”之后常用動名詞做主語 ，而少用不定式，如:It /There is no use crying over the split milk.It /There is no help tak ing this medici ne.但是如果該句型中用了for引出不定式的邏輯主語，就只能用不定式，如：(93) There is no good for us to do that exercise.3. 不定式可以和 when, where, how, what, whether等連

6、用，在句子中做主語，賓語和表語 而動名 詞則不能，如:How to solve the problem is a hot potato.Where to put the box seems hard to decide.Whether to do it hasn' t been decided.What to do next is up to you.學習好資料歡迎下載by defaulta) if you win a game, competition etc by default, you win it because your opponent did not play or because there were no other competitor