has had是現(xiàn)在完成時(shí),表示過(guò)去發(fā)生的事情影響到現(xiàn)在
這句話(huà)要表達(dá)的是病人過(guò)去吃的藥到現(xiàn)在仍然沒(méi)有任何作用,所以用現(xiàn)在完成時(shí)
this medicine has had no effect on the patient為什么要加 had,has no effect不行嗎?
this medicine has had no effect on the patient為什么要加 had,has no effect不行嗎?
英語(yǔ)人氣：273 ℃時(shí)間：2020-01-28 20:13:29
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