【正文】
ntroduce clauses of reason. Its tone is strong Step2. Practice Daniel has more questions about Tan Dun. He searched the Inter and made some notes. Look at his notes and answer his questions. Use because to introduce the reasons. We never use the conjunction so in sentences with because. Step3. Presentation Since and as are also used to give reasons for something. Usually the reasons are already known. Their tone is weaker than because. Since he had no musical instruments then, he made music with mon objects like stones and paper. As he likes the sounds of nature, Tan uses them a lot in his music. Step4. Practice There is going to be an art festival at Sunshine Middle School. Help Amy make sentences with since or as. 1 Daniel decided to play the famous Chinese piece Liang Zhu. He is good at playing the violin. Daniel decided to play the popular piece Liang Zhu since/as he is good at playing the violin. 2 Kitty has to practise hard these days. She will dance at the song and dance show. 3 Sandy will design the posters for the art festival. She can draw very well. 4 Some students love painting and taking photos. 教師“個備”或?qū)W生筆記欄 There will be a students’ art show. 5 The art festival is open to all students and parents. Everybody is wele. Since and as are used in the same way and have no difference in meaning. 【當堂 訓(xùn)練】 1) 用 as, since ,because, because of ,for 填空 (1) Mary missed the train___________ she arrived late. (2) It will rain, __________ the sky is dark. (3) __________ we live near the river, we can