　　— Because she is sick. 因为她病了。【拓展】because和because of的辨析：because 是连词，其后接句子；because of 是复合介词，其后接名词、代词、动名词、what从句等。例如：I didn’t buy it because it was too expensive. 我没有买是因为它太贵了。He lost his job because of his age. 由于年龄关系他失去了工作。He knew she was crying because of what he had said. 他知道她哭是因为他说的话。4. They are leaving for Japan the day after tomorrow for a game …leave作动词，意为“离开(某处)”，常与for连用，后接要去的地方。leave的过去式和过去分词都是left。例如：　　He is leaving for Beijing next week. 他下周打算离开去北京。　　Mr. Smith left the room at two o’clock. 史密斯先生两点离开房间。第 1 页
Unit1 Playing Sports句式精讲精练【句式精讲】1. Which sport do you prefer, swimming or rowing?(1)prefer 作动词，意为“更喜爱，更喜欢”。相当于like…better。例如：　　Of the two cars，I prefer that red one.　　两辆车中，我更喜欢红色的那辆。　　Which do you prefer，coffee or tea? 　你更喜欢咖啡还是茶？　　(2) prefer to do sth. 意为“宁愿做某事”。例如：　　I prefer to go home now. 现在我宁愿回家。　　(3) prefer sth to sth. 意为“与……相比更喜欢……”。后接名词、代词或动词-ing形式。　　例如：　　She usually prefers vegetables to meat.她通常喜欢蔬菜而不喜欢肉。2. Are you going to join the school rowing team?（1）join 意为“参加，加入”，可以指加入某种社团或者组织，成为其中的成员。　　例如：　　Yao Ming joined the NBA. 姚明加入了NBA。　　（2）“join + 指人的名词或代词”，意为“加入……之中”。例如：　　Will you join us for lunch? 和我们一起吃午饭好吗？　　（3）“join + in + 活动类名词”意为“参加……（活动）。”例如：Can you join in the game? 你能参加这个游戏吗？3. Because it makes him strong and it’s popular all over the world.because意为“因为”，表示直接原因。它所指的原因通常是听话人所不知道的，其语气最强。常用来回答why的提问，一般放于主句之后，也可以单独存在。例如：　I stayed at home because it rained. 因为下雨我待在家里。　　Because Lingling was ill, she didn’t come to school. 玲玲因病没有上学。He kept working all day, because he wanted to finish the work on time.他整天都在不停地工作，因为他想准时完成工作。　　— Why is she absent? 她为什么缺席?


对方所提出的要求，意为“务必， ”。　　例如：　　Be sure千万to give it back in time. 务必
要及时归还。　　(2) “be sure + 不定式”还可意为“一定，肯定”，
往往表示说话种的一人推测或判断主语可以是人，也可以是物。例如：　　It，’s sure to rain tomorrow. 明天一定
会o　　(3) be sure 下雨。f/about表示主语“相
信”或“对……有把握”,后接名词、代词或动词-ing形式,主语必须
是人。例如：　　He is sure of success. = He is sure that he will succeed. 他
自信会取得成功 　　(4) “be sure。+ 从句”表示“肯定，有把握”，主句的主语
必须 I’m sure是人。例如：who he is. 我知道他是
谁6. 。Basketball is one of the most popular sports …one of +the +形
容词最高级+复数时词/代词，意为“名……之一”，当其作主语最，谓用单语动词
数i　　H形式。例如：s brother is one of the tallest boys in the class.　　他
弟弟是这个班最高的男 　　The song is one生之一。of the most popular songs.　　这
首歌是最流行的歌之一。　　One of us has nothing for breakfast.第 2 页
　　【拓展1】　　（1）leave还意为“离开(某人)的身边；离弃”。　　例如：　　Her husband has left her.　 她的丈夫把她遗弃了。　　（2）动词短语leave sth. at/in ＋表示地点的名词，意为“把某物忘在某地”。　　例如：　　I left my key at home. 我把钥匙忘在家里了。　　Tom left his English book at school, so he didn’t do his homework.　　汤姆把英语书落在学校了，所以没有做英语作业。　　（3）leave还意为“听任，使处于某种状态”。　　例如：　　He left the windows open. 他让窗子开着。　　【拓展2】　　 leave与forget　　 leave与forget两者都是动词，都含有“忘记”的意思。表示把某物“落在某地方”用leave，如果无具体地点，则用forget。例如：　　 He said that he had left his book in the classroom. 他说他把书落在教室里了。I never forget her. 我永远也忘不了她。5. You are sure to have more fun.sure常用于口语中，为说话人较有把握的肯定回答，意为“当然可以，愿意”，相当于certainly或yes。例如：　　— May I use your pen? 我能用一下你的钢笔吗？　　— Sure. 当然可以。　　【拓展】　　sure的其他用法：　　(1) 祈使句“Be sure + 不定式”表达说话人向


早【句式精饭。练】I. 句
转换型，按要求完成下列 子。1. Could句you please follow me?（
改为否yCould 定句）ou please _______ _______ me?2.—Would you mind waiting for a little while?（作
出 —_______回答）_______ not.3. This term he is not going to learn French. He’ll learn Japanese instead.（
同义句转换oHe is g）ing to learn Japanese _______ _______ French this term.4. They are doing some shopping.（
改为一般将_They __来时）____ _______ some shopping next weekend.5. I’m sorry for being late for school.（
就划线部______分提问）_are you sorry_______?6. Li Ping doesn’t run as far as Wang Lin. (改
为同义P)　　 Li 句ing ________ ________ ________ Wang Lin.　　7. The Yellow river is 5.464 kilometers long. (对划线部
分提问)　　 _______ _______is the Yellow River?　　8. It took me fifteen minutes to finish the e-mail. （
改为同义_　　 _____句）_ spent ______ quarter in _______ the e-mail.　　9. I don’t like Coke. My sister doesn’t like Coke, either.(合
并 )　　 ______为一句I ______ my sister likes Coke.　　10. Betty likes taking a bus to work. She likes taking an underground to work better. (合
并 句)　　 为一Betty ______ taking an underground ______ taking a bus to work.II. 根据汉
语提示，完成句子。1.老师认
为和学生在一起将获得极大的乐趣aTe。chers think they will_______much_______with the students.2.越
来越多的外国人将在中国o_______ and _______ f生活。reigners will live in China.3.有
多少国家参加了2019年北京奥运会？How many countries _______ _______ _______ the 2019 Beijing Olympics?4.我们的
城市将有更多更宽阔的道路eTher。 _______ _______ more and more wide roads in our city.5.CBA代表什么？What does CBA _______ _______?6. 我相
信他会按时到这的。I _______ _______ he will be here on time.7. 他们没有
机会打败湖人队。　They have ______ _____ to beat Lakers.8. 我以
前经常梦见坐火车，梦见去首　　都。I often ________ _________ the train, about going to the capital.9. 我宁愿
自己做饭也不愿出p　　I 去吃。refer_______ _______ for myself _______ ________ out. 10. 他是
班上最高的男生之一。第 3 页
　　我们中有一个人没吃


话，选择方框内的句子填空，使对话意思连贯正确o A：Hey，Tom! D。n’t you remember me？ B：Oh，wow! __1__ A：That's right． B：__2__ A：Yes，but now I'm outgoing． B：Wait a minute! __3__ A：Yes，I did．Now I still like playing ping—pong． B：__4__ A：Yes．I have a pair of new bats．Let’s play ping—pong together． B：__5__【参
考答案】I. 句
型转换，按要求完成下列f子。1. not 句ollow 2. Of course 3. instead of 4. will do 5. What, for6. runs nearer than　 7. How long　8. I, a, finishing 9. Neither, nor　 　　10. prefers, toII. 根据汉
语提示，完成句子。1. get; fun 2. More; more 3. took part in 4. will be 5. stand for6．am sure 7．no chance 8. dreamed about/of　 9. prefer cooking, to eating 10．one of the tallestIII. 仔细阅读对
话，选择方框内的句子填空，使对话意思连贯正确F1-5 CA。GD第 4 页A．You used to be quiet，didn't you? B．Very nice talking to you． C．You're Bill，aren't you? D．OK．Let's go． E．You're welcome． F．Did you use to like playing ping-pong? G．Do you have ping-pong bats?
　　He is _______ ________ _______ _______ boys in the class.III. 仔细阅读对