I miss him,but he is lucky not to be alive and worrying today.谁能告诉我be在这句中是起助动词的作用吗

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I miss him,but he is lucky not to be alive and worrying today.谁能告诉我be在这句中是起助动词的作用吗
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I miss him,but he is lucky not to be alive and worrying today.谁能告诉我be在这句中是起助动词的作用吗
I miss him,but he is lucky not to be alive and worrying today.
谁能告诉我be在这句中是起助动词的作用吗

I miss him,but he is lucky not to be alive and worrying today.谁能告诉我be在这句中是起助动词的作用吗
to be alive ,首先to的后面一定是动词原形,第二 alive 这里是形容词,所以要用到be!

no

系动词啊。就是平时be的作用。在to 后面用动词原形。