When shopping, keep your eyes for those energy-saving machines. A．openedB．openC．to openD．to be open 题目和参考答案——青夏教育精英家教网—

题目内容

When shopping, keep your eyes ______for those energy-saving machines.

A．opened

B．open

C．to open

D．to be open

解析试题分析：当购物时，睁大你的眼睛看看这些节能机器。Open是瞬间动词，不能表示持续性动作，故本句中open用作形容词开着的，做宾语补足语，选B。
考点：词性辨析
点评：英语单词的一个特点就是一词多义，一词多性，即一个单词可以有多个不同词性的用法。因此我们首先要详细了解这些单词作为不同词性的含义及用法，尤其注意其比较特殊的用法，然后结合语境选择正确答案。

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