have had has 可以放在句子开头吗?动词作为句子开头应该怎么变化?

have had has 可以放在句子开头吗?动词作为句子开头应该怎么变化?
have had has 可以放在句子开头吗?动词作为句子开头应该怎么变化?

have had has 可以放在句子开头吗?动词作为句子开头应该怎么变化?
放在开头的have 一般为助动词,而非动词,一般只有have 和has,(助动词即为do does,之类的)