he said that someone had been poisoning his food

he said that someone had been poisoning his food
he said that someone had beenpoisoning his food. 为什么poison要用poisoning这个形式?
英语人气:401 ℃时间:2020-01-31 10:23:39
优质解答
亲,这个应该理解为一直在下毒这是有人主动的行为,并且从某个时刻开始就没断过,几次三番的下毒所以是分词形式,亲,不懂再问
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