Only if__according to the directions can the medicine be qui

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Only if__according to the directions can the medicine be quite effective.
为什么填taken,而不是having been taken

1 因为强调的是“一贯的,规律的”,所以我们用taken.==only if it IS TAKEN-------一般不用完成式结构------has been taken / having been taken .
2 having been taken往往与有for-- -- ,since-- - - - 这样的时间状语的短语结构一起使用.

The past,can only be used to oblivion. Read the following directions on a bottle of medicine： only you can be the Lord to me,clear the shadow like the sta The study and practiae of medicine can only benefit from the These cases of medicine are to be sent the hospital give directions to the party. 英语翻译1.Hoped that looks like the sun to be the same,can only Text can only be used to cherish the memory of the genius the only thing that i can think of for it to be fair is to j The only not to be able to get only age! 改错 It seemed to be hundreds of people in the hall;it was qui Let is go to the ciassroom__________A quick B be quick C qui