__on time,this medicine will be quite effective.

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__on time,this medicine will be quite effective.
1.taking
2.being taken
3.taken
4.having taken选什么为什么?

3
逻辑主语是this medicine ,表被动,用过去分词做条件状语
再问： taken on time是什么意思啊。是条件句那是不是if it is taken....？？
再答：我说了，是过去分词短语做条件状语可以改为If it is taken 翻译：如果准时服用，这药是很有效果的。

__on time,this medicine will be quite effective. 4.____________on time,this medicine will be quite effective. 英语翻译.This Letter shall be effective from the Effective date will be going 后面跟this time If you take this medicine on time ,it will l____ the pain on take the medicine on time,or your headache will be worse.同义句 Yes,take this medicine three times a day,you will be all rig Take this medicine only once,and your trouble will be cured 英语Take this medicine only once,and your trouble will be cure Take this medicine three time a day This medicine has proved effective.中的proved为何是连系动词? as as this kind of medicine is as effective to North America