2021_2022学年新教材高中英语UNIT1SCIENCEANDSCIENTISTSSectionⅢUsingLanguage学案新人教版选择性必修第二册

Part Ⅰ　Talk about scientific experiences [听说课前清障]1．cast vt. 投射；向……投以(视线、笑容等)；投掷 2．shadow n. 阴影；影子；背光