(1)turn on意为"（把水、煤气、电源等）打开"，其反义词组是turn off；turn down意为"（把音量、灯等）关小、调低"，其反义词组是turn up。如：[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ v-g3k%&YiE*N?I-5FroG]

    Please remember to turn off(=shut off) the light before you leave. 你离开的时候，记得要把灯关上。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ W8_D[9P2l.]8h08qIFroG]

    (2)表示"开（关）门、窗、盒子、书等"要用open /close /shut。 如：[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ {t[(TS'/"]I#Zn'0FroG]

    Close (=Shut) the door so that the cat can't get out. 把门关上，不要让猫出去。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ \gah2gHxg:Y*sFroG]

    实战：Mary is doing her homework. Would you please________the radio________a little?[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ ]J"7s+2$ve]@n2v+FroG]

    A. turn；off  B. turn；down  C. turn；up  D. turn；不填[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ k\e/,BWAr}hy,[ FroG]

    Key :B[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ I?M n7_[f5Le`z"|FroG]