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The idiom "to be on the fence about sth" isused to describe being torn among decisionsor options. For instance, in today"s lesson, the speaker was on the fence about what costume to wear. He was having a hard time choosing between a classic costume (like avampire) or a newer costume (like BlackPanther).
习语"to be on the fence about sth (在某事上犹豫不决)"用于描述不能做出决定而左右为难的情况。比如，在今天的课程中，说话者对于要扮成什么形象犹豫不决，他很难决定到底是扮成经典形象（比如吸血鬼），还是扮成新的形象（比如黑豹）。
Here are a few patterns for this idiom:
以下是这个习语使用时的几种结构：
S + be + on the fence + about + noun/v-ing.
主语 + be + on the fence + about + 名词/动词ing形式。
I"m on the fence about dressing up as awitch or a nurse. 我在犹豫扮成女巫还是护士。
S + be + on the fence + about + wh-clause
主语 + be + on the fence + about + wh-从句。
She"s on the fence about where to go. 她在纠结去哪儿。
S + be + on the fence + about + whether (ornot) + S + should + verb.
主语 + be + on the fence + about + whether(or not) + 主语 + should + 动词。
They"re on the fence about whether or notthey should tell him about the problem. 他们在犹豫该不该告诉他这个问题。
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