after all是介词短语吗?no longer是副词短语吗?after是介词吗,为什么?think it over think about it还是think it about think over it?
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after all,是介词短语；
no longer,副词短语；
after + n,介词；after+ 句子:从属连词；
think it over = think about sth very carefully.
======以下答案可供参考======
供参考答案1:
正好相反think about it 动词+ 介词+ 宾语，这样的短语不可拆开
think it over 动词+人称代词+副词
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