The divers often have to work in total darkness为什么often 在hav

The divers often have to work in total darkness为什么often 在have to 前面,为什么不在它后面

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瞬遇夏幼苗

共回答了25个问题采纳率：84% 举报

often 是频率副词
频率副词always,often,usually,frequently,seldom 等和谓语连用是,一般置于实义动词之前,此句have 是实义动词

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have to是什么词

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行为动词 “不得不” 虽带有情态意味，常把它同Must 去比较，但它不属于情态动词

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