北師大版英語八上《unit 4 fact and story》（lesson 13）之一(文件)
【正文】 teen He could+V(原 )…… He could already play the keyboard and the violin. He wrote five short piano pieces. He wrote music for violin. He wrote a long piece of music. He wrote a ic opera. He went for a performance in Rome. 表示時間的短語： ?by the age of…… ?at the age of…… ?when sb. was …… ? 主語 + could + V.(原 )…… ? 主語 + couldn’t + V.(原 )…… ? Could + 主語 + V.(原 )…… ? Yes, 主語 + could. No, 主語 + couldn’t. played the puter games four He could play the puter games when he was 4. used the puter, seven They could
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