【文章內(nèi)容簡(jiǎn)介】
supposed to arrive on time. = be expected to do/ should do 動(dòng)詞不定式 be supposed to 的否定形式為 be not supposed to,意為 “ 不允許,不應(yīng)當(dāng) ” ,表示委婉的禁止,相當(dāng)于 shouldn’t 。 You39。re not supposed to smoke here. = You shouldn’t smoke here. What are you supposed to do when you see a thief stealing someone’s wallet? You are supposed to stop the thief from stealing someone’s wallet. What are you supposed to do when you find rubbish everywhere? You are supposed to help to keep the street clean. What are you supposed to do when someone asks you the way? You are supposed to show the way politely. 4a Complete the sentences with the phrases in the box. be supp