Genarally speaking,__according to the directions ,the drug has no side effect.A.when taking B.when taten C.when to take D.when to be taken选哪个呢,
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Genarally speaking,__according to the directions ,the drug has no side effect.A.when taking B.when taten C.when to take D.when to be taken选哪个呢,
Genarally speaking,__according to the directions ,the drug has no side effect.
A.when taking B.when taten C.when to take D.when to be taken
选哪个呢,
Genarally speaking,__according to the directions ,the drug has no side effect.A.when taking B.when taten C.when to take D.when to be taken选哪个呢,
B
省略了When the drug is taken according.
这种句子要看后面的主语了,如果说后面的主语是动作的执行者,则前面用现在分词来表示主动关系.
例:
Knowing a lot from his teacher,he went on his research.
从他老师那知道很多之后,他继续他的研究.(由于是he自己know a lot的,所以用ing表示主动关系.)
如果后面的主语是动作的承受着,哪么用过去分词表被动关系.
像你题目中的这句就是.
再例:
Seen from the mountain,the city is small.
从山顶上看,这个城市很小.
由于城市是被看的,所以用seen.
OK?