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问题: 两道选择题

_______ that the door is locked before you leave the room.
A. Make sure
B. Be sure


_______other good students, the teacher thinks Hank is _____ a student.
A. Compared with; a most satisfied
B Compared to; the most satisfied
C Comparing to; the more satisfying
D Compared with; a more satisfying


答案为bd,请大家帮为解释下为什么,非常感谢

解答:

1 make sure意为“确保”,表示动作
be sure意为“感到/认为肯定”,表示状态
根据题意,表示动作的make sure更合适。

2 compare A to B 把A比喻成B
compare A with B 把A与B进行比较
根据题意,后者是正确的选择
satisfied是“感到满意”的意思
satisfying是“令人感到满意”的意思
显然这里要表达的是hank是一个让老师满意的学生,所以应该用ing形式。