我们只好抱着行李走楼梯，因为那部唯一的电梯正在修理中。
We had to carry our luggage up the stairs because the only elevator was being repaired.
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was英 /wɒz/|美 /wɑz/
being英 /ˈbiːɪŋ/|美 /ˈbiɪŋ/
repaired英 /rɪˈpeəd/|美 /rɪˈpɛrd/
解释
was being repaired 为过去进行时被动语态，由 was + being + 过去分词 repaired 构成，表示在过去某一时间段内，主语正在被修理。because 从句解释主语不得不走楼梯的原因。
We had to carry our luggage up the stairs because the only elevator was being repaired.
was being repaired 为过去进行时被动语态，由 was + being + 过去分词 repaired 构成，表示在过去某一时间段内，主语正在被修理。because 从句解释主语不得不走楼梯的原因。