positive: "题目<br>答案解析<br>查看更多优质解析<br>举报<br>1.并列结构中,or通常用于否定句,and用于肯定句.但有时and 也可用于否定句.请注意其不同特点:<br>There is no air or water in the moon.<br>There is no air and no water on the moon.<br>在否定中并列结构用or 连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and.<br>2.or用于连接并列的单词、词组、短语或句子,表示""或者""的意思.如:<br>We can visit the World Park or travel around the world.<br>我们可以参观世界公园,或者周游全世界.<br>3.or用在选择疑问句中,灵活译为""还是"".如:<br>Is that an apple or an orange?那是苹果还是桔子?<br>4.or用于否定句中,代替and ,表示""和""的意思.如:<br>I don't like bread ,rice or porridge.我不喜欢面包、米饭和粥.<br>5.or用于连接两个并列的句子,表示""否则,要不然""的意思.如:<br>Hurry up,or you'll be late.快点,否则你要迟到啦.<br>祝你学习愉快!<br>解析看不懂?求助智能家教解答<br>查看解答<br>相似问题<br>二维码<br>回顶部"
negative: turn one's back to背对;背弃turn one's back to sb.<br>turn down拒绝 ;把(声音)放低;调小turn down sth.如turn down the radio 调小点turn sb. down 拒绝<br>turn out关掉(火或热源);结果是;证明是,最后情况是;生产;(人群)出来(参加活动)turn out + (to be)+ adj/n<br>turn over移交 交给翻页;推翻turn 代词 over 例:turn it overturn over the book 把书翻过来<br>turn to求助于;变成turn to sb/sth<br>turn up来到;出现;开大声音sth. turn over the book 把书翻过来