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课件网) Section A Grammar Focus Unit 4 My Favourite Subject 通过观察示例句子，能梳理和归纳询问和回答关于喜欢的学科和原因的表达方式，以及连词and, but, because的用法； 理解含有and, but和because的表意功能，并学会正确使用。 学习目标 01 02 math music Chinese maths art English What subjects do you have at school biology history P.E. geography IT ...... Subjects Revision Description words easy fun interesting difficult/hard useful important boring useless relaxing Think about the words to describe these subjects. exciting —Why do you like this subject —Because it’s_____./ Because it’s_____and_____. Grammar Focus Read the sentences and circle and、but、because. I have art and geography today. English is important, and my English teacher is really nice. Biology is difficult but important. History is my favourite subject, but my sister doesn’t like it. I like Chinese because it’s fun. He doesn’t like maths because it’s boring to him. Read the sentences again and think when to use and、but、because. Complete the statements with and、but、because. I have art and geography today. English is important, and my English teacher is really nice. Biology is difficult but important. History is my favourite subject,but my sister doesn’t like it. I like Chinese because it’s fun. He doesn’t like maths because it’s boring to him. 1.We use“_____”to give a reason. 2.We use“_____”to give another idea. 3.We use“_____”to give two different ideas. because and but Think how to use and、but and because. 定义： and but because 连词 不独立担任句子成分，只起连接词与词，短语与短语以及句与句的作用。 Grammar Focus 1.连词 and (1) and 连接两个并列成分 ① “和”，否定句中用or。但如果前后名词都用no修饰，则可以用and。 The air was so warm and bright. It has no feet or legs. It has no eyes and no ears. I have no sister or brother. ② “然后”。用于连接两句有时间上先后的句子。 She washed the dishes and dried them. ③ 表示目的，意图。用于go, come, stop, run, stay等动词后。 Come and have a drink. Go and buy one. ④ “只要……就会……”“如果……那么……”， 用于祈使句后，表示条件与结果的关系， “祈使句， + and + 句子”。 Knock on the door, and it will be e late again, and you’ll be fired. 2.连词 but ① 表转折“但是，可是，而，却”。 He is in poor health, but he still kept working. ② 用在表示歉意的话后，引起一个分句，这个but通常不译成汉语。 Excuse me, but can you tell me how to get to the railway station ③ 不与although/though (“虽然，尽管”) 连用。 Though he is old, he works hard. He is old, but he works hard. ④ 作介词，表示“除了 之外”。 She did nothing but watch TV. 3.连词 because because是连词，意为“因为”，可以用来引导原因状语从句。汉语中的“因为……所以……”常常连用，但在英语中because和so不能同时连用。如： 因为数学有趣所以我喜欢它。 Because Math is interesting, I like it. = Math is interesting, so I like it. The book is very interesting, so we all like it. 这本书很有趣，我们都很喜欢它。 = Because the book is ... ...
