LeteratureThe Dream Keeper

(2) when ___________ (ask) , he always gives good advice.
(3) he will not go the party unless __________.(invite)
(4) the research can not be stopped once____________. (begin)
答案：(1)working (2)asked (3) invited (4) began

4. 代/名+介詞+which引導的定語從句
【點撥】這樣的定語從句一般是非限制性定語從句，which在從句中作介詞的賓語，代指前面的物或事。例如：they all come from the usa, most of whom are scientists.他們都來自美國，大部分是科學家。we had a meeting, the purpose of which was completely unclear. 我們開了一個會，會議的內容還不完全清楚。
【點擊高考】recently i bought an ancient chinese vase, __________ was very reasonable.(上海)
a. which price  b. the price of which  c. its price  d. the price of whose
【解析】答案是b。這是一個非限制性定語從句，the price of which指代花瓶的價格，等于whose price。
【鞏固練習】(1)there are two buildings, ________ stands nearly a hundred feet high.( 湖北)
a. the larger  b. the larger of them  c. the larger are that  d. the larger of which
(2)the factory produces half a million pairs of shoes every year, 80%_______ are sold abroad.(遼寧)
a. of which b. which of  c. of them  d. of that
答案：(1) d  (2) a

5. –ing作狀語
【點撥】動詞的-ing形式作狀語時，應該注意以下三個方面：（1）分詞表示的是句子主語發出的動作；（2）分詞表示的動作和謂語表示的動作或狀態是同時發生或先后發生；（3）分詞表示的是次要的動作，一般是對謂語表示的動作或狀態加以說明。常用來表示伴隨、原因、時間和結果等。例如：he often sits on the sofa, watching tv. （伴隨）the bell which indicated the end of the class rang, interrupting our heated discussion. （結果）
【鞏固練習】用括號里所給動詞的適當形式填空
(1) _________ so poor in those days, they couldn’t afford to send their son to school.(be)
(2) _______ out of the room, he found the boy still there.(walk)
(3) his wife died in 1990, _________ him two children.(leave)
(4) they stood there for an hour, __________ the game.(watch)
答案：(1) being (2) walking (3) leaving (4) watching

詞語辨析
1. sometimes, sometime, some time 和some times 四個詞的區別。
sometime 是副詞，意思是：在某時。表示不確定的時間，可以與將來時也可以與過去時連用；sometimes是頻度副詞，意思是：偶爾，有時。常與一般現在時或一般過去時連用；
some time是名詞詞組，意思是：一段時間。常指將來；some times是名詞詞組，意思是：幾次，幾倍。
【例句】i usually go to school on foot, but sometimes i go to school by bike.
        i saw him sometime last winter.
        she will stay in beijing for some time.