Therearesomehealthproblemsthat,when
来源:国语帮 1.42W
问题详情:
There are some health problems that, when ________ in time, can become bigger ones later on.
A. not treated B. not being treated
C. not to be treated D. not having been treated
【回答】
A 考查非谓语动词。在该句中,逻辑主语是some health problems,与 treat之间构成被动关系,所以用过去分词,when not treated in time是when they are not treated in time 的省略,选A项。B、C和D项虽然也都表示被动,但B项强调正在进行的动作;C项强调将来的动作;D项则强调已经完成的动作,故都排除。
知识点:非谓语动词
题型:选择题