Using passive voice: We’ll have to put off our picnic if it rains tomorrow.

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问题 Using passive voice:
We’ll have to put off our picnic if it rains tomorrow.

选项

答案Our picnic will have to be put off if it rains tomorrow.

解析 本题考查“动词+小品词”的被动态。本题中,原句的谓语动词为短语put off。变被动态时,首先需将宾语our picnic提前;又因have to后跟动词原形,put前应加be;put的过去分词与其动词原形一致,不需改变。
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