I didn't hear the phone.I must have been asleep.我刚才没有听到电话,我想必是睡着了复合谓语有一句说 助动词或情态动词 加动词原形构成复合谓语.我想问上面一句话 I must have been asleep 这句话构成谓

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I didn't hear the phone.I must have been asleep.我刚才没有听到电话,我想必是睡着了
复合谓语有一句说 助动词或情态动词 加动词原形构成复合谓语.
我想问上面一句话 I must have been asleep 这句话构成谓语是哪几个词?

谓语:asleep
"have been"只代表它是现在完成时
must表推测

have been

must have been

must have been 发生在过去,过去完成时必须这样表达

have been