9B Unit 3 學案
4. 在…中心_________________ 4 被吸引__________________
5. 充滿著游客_________________ 6 觀看升國旗________________
7 一個中式園林________________ 8 一個人工湖_______________
8 在古代_________________ 10 用石頭和磚快建成__________________
11 在日出時______________ 12 體會它的美麗與雄偉___________________
13 乘船沿著漓江旅行___________________________________
二. 要點點撥
1.unless引導的條件狀語從句。
由于unless具有否定意義,因此它引導的是個否定的條件(如果……不)。可以把它看作是if…not的同義表達手段。如:
①unless he comes… = if he doesn’t come… 如果他不來……
②unless you work hard, you will fail. = if you don’t work hard, you will fail.
如果你不努力工作,你會失敗的。
注意:unless從句,如同if從句一樣,也要用一般現在時代替一般將來時。如:
unless it rains, we’ll go hiking.如果不下雨,我們將去遠足。
2. so that引導的目的狀語從句
1)so that引導目的狀語從句,從句中通常帶有can, could, may, might, should等情態動詞,以適用于目的。如:
they worked very hard so that they could finish the work before supper.
他們拼命地干,想在晚飯前就把工作干完。
注意:(1)so that從句如為否定結構,則謂語動詞中多用情態動詞。
(2)so that引導的目的狀語從句,可轉換成in order that引導的目的狀語從句。若從句主語與主句主語一致,還可用in order to (do) 或so as (to do) 改成同義簡單句。如:they worked very hard so that they could finish the work before supper.
= they worked very hard in order that they could finish the work before supper.
= they worked very hard in order to finish the work before supper.
= they worked very hard so as to finish the work before supper.
2)so that引導的狀語從句也可表示結果,這時so that從句中根據句意可用或不用情態動詞。 如:
they worked very hard so that they finished the work before supper.
他們拼命地干,結果他們在晚飯前就把工作干完了。
3)句型so…that…表示“如此……以致于……”,so修飾形容詞或副詞,that引導的從句作狀語,表示結果。如:
the shoes are so small that i can’t wear them.這雙鞋小得我都穿不上。
3. the emperors of the ming and qing dynasties used to live here.
明清兩朝的皇帝們過去就住在這兒。
used to do, be used to doing 和be used to do
1)used to do表示“過去常常做某事”,言外之意就是現在已不再如此,因此沒有現在式,后面總是跟不定式。如:
it used to be a very rich village.這個村子以前很富。
注意:used to構成疑問時可借助于助動詞did或直接將used移至主語之前。如:
did you use to see each other? = used you to see each other?
你們以前經常相互見面嗎?
used to 在構成否定時可借助于didn’t,也可直接在used后面加not構成。如:
she didn’t use to drink. = she used not to drink.她過去不常喝酒。