positive: 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
negative: Let's = let us<br>为你解答,如有帮助请采纳,<br>如对本题有疑问可追问,Good luck!