positive: Is the flower red or blue?<br>那花是红的还是蓝的?<br>He didn't decide whether to go to the film or to watch TV.<br>他还没有定下来去看电影还是看电视。<br>4.and与or的区别在于:and一般用于肯定句中,否定句中则用or。在少数情况下,and也用于否定句中,这时not否定的是后者而不是前者; 而or所连接的两个部分都是否定。<br>5.either...or 或者…或者…,不是…就是…<br>or else 用以表示威胁<br>or rather 说得更确切些或加以更正
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