他肯定提前回家了——办公室灯灭了，车也不见了。
He must have gone home early, because his office is dark and his car is missing.
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must英 /mʌst/|美 /mʌst/
gone英 /ɡɒn/|美 /ɡɔn/
解释
must have 是对过去动作的推测，gone 是 go 的过去分词，表示根据「办公室暗+车不在」推断「已经回家了」
He must have gone home early, because his office is dark and his car is missing.
must have 是对过去动作的推测，gone 是 go 的过去分词，表示根据「办公室暗+车不在」推断「已经回家了」