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三、 “ It is +adj.+to do sth.”的用法 it作形式主語,真正的主語是動詞不定式 。 .:You are not supposed to smoke on the bus. supposed to have done “本應(yīng)做某事而實際上沒做” 。主語是物時,意為“本應(yīng);本該”,指“某事本應(yīng)該發(fā)生而沒有發(fā)生” 。 .:Put on your ’t take them off. It’s warm in the can take your coat off.=It’s warm in the can take off your coat. 【 拓展 】 take off還可 譯為“(飛機等)起飛”。當(dāng)人稱代詞作賓語時,須置于兩詞之間;當(dāng)名詞作賓語時,置于兩詞之間或副詞后面都可以。 .:I wanted to clean off these black marks.=I wanted to clean these black marks off. Language Points many eastern European countries,you are expected to/ supposed to take off your gloves before shaking 多東歐國家,握手前你應(yīng)該摘下手套。 .:She often goes abroad on business. I39。s birthday ? meeting people ? visiting someone39。 do) in social situations may be difficult,but it is worth the trouble if you want to understand another culture. isn39。know) all of these,but it is helpful______