1、Unit 7- Unit 12 重點,therefore, although和however的用法 現(xiàn)在完成進行時 虛擬條件句 進行時的被動語態(tài) 間接引語 我們先來看看therefore, although, 和however的用法。 therefore表結果,比so顯得更正式一些，在句中常與and連用； 如：He worked day and night, and therefore he was able to buy a new sports car. although表示“雖然，但是”所引導的從句可以放在主句前面，也可以放在主句的后面。在主句前面時，要用逗號與主句隔開；,如: Alth

2、ough they were 75 years old, they still played tennis every day. ； 由于although的中文意思是“雖然，但是”，很多學員容易犯的一個錯誤是用了although后，又用but，這在英語里是錯誤的。 however表示轉折，與but意思相同，但是較正式的說法。However在句中位置較靈活，在句首時，后面常用逗號。 如：He was wealthy. However, he was very mean(吝嗇的).,現(xiàn)在完成進行時?，F(xiàn)在完成進行時強調動作從過去某個時間一直持續(xù)到現(xiàn)在，而且還要繼續(xù)下去。其基本構成是：have / h

3、as + been doing （基本結構） have / has not + been doing （否定形式） Have / has + 主語 + been doing （一般疑問句形式） 特殊疑問句形式將疑問詞置于句首我們來看一個例子： Ive been working here for three years.,I havent been working here for three years. Have you been working here for three years? How many years have you been working here? Who have

4、 been working here for three years?,這幾個單元中的一個難點是虛擬條件句。 虛擬條件句表示與事實相反的愿望、假想。同學們先掌握與現(xiàn)在事實相反的虛擬條件句。其結構是： If + 從句主語 + 動詞過去式，主句主語+ would (d) +動詞原形。 例如： If I had the time, Id make something better. 在這種與現(xiàn)在事實相反的虛擬條件句中，需要注意的是，不論主語是什么人稱，be動詞都常用were， 如： If I were you, Id ask her.,現(xiàn)在我們看看進行時的被動態(tài)形式。進行時被動語態(tài)分為現(xiàn)在進行時被動

5、語態(tài)和過去進行時被動語態(tài)。這兩種被動語態(tài)的時態(tài)是通過be動詞來體現(xiàn)的。我們分別來看它們的基本結構： 現(xiàn)在進行時被動語態(tài)： be ( am / is / are) + being + 動詞過去分詞 過去進行時被動語態(tài)： be (was / were ) + being + 動詞過去分詞 這兩種被動語態(tài)的否定形式和疑問句形式都是在be動詞上發(fā)生變化。例如： His behaviour is not being blamed by the public. Were 200 people being treated? Where were 200 people being treated?,間接引語也學習過。要注意的是間接引語中主句時態(tài)和從句時態(tài)的一致性原則。一般來說，如果主句謂語動詞為過去時，在將直接引語變?yōu)殚g接引語時，要將直接引語中的謂語動詞時態(tài)往前推一個時間檔，即一般現(xiàn)在時變?yōu)橐话氵^去時，一般過去時則變?yōu)檫^去完成時，看下面的例子： “ My parents live in Beijing,” She said. She said her parents lived