Question

一道英语选择题（devote to）

Professor Smith,who___ the research of wild animals all his life,___ to give a speech in Beijing University next week.
A.has devoted to;is supposed
B.devoted to;will be supposed
C.has been devoted to;is supposed
D.had devoted to ;will be supposed
答案选C 说说我的不解 为什么第一空不能用has devoted to，而第二空为什么is supposed to 能表将来。等等其他原因

Answer 1

devote是及物动词，后面必须加宾语has devoted to不正确，有两个结构：
be devoted to 和devote oneself/sth. to，因此这里选择C
be supposed to do意思是应该, 被期望做某事，，这里who___ the research of wild animals all his life是非限制性定语从句，在分析时可以去掉，主句就是Professor Smith is supposedto give a speech in Beijing University next week.
楼主应该能够理解了吧。记得采纳哦！！有问题可以私聊。

Answer 2

C.has been devoted to;is supposed
be devoted to 为投身于。。。，根据句意应用现在完成时，故用has been devoted to。
is supposed to相当于should之意，“ 应该。。。”

Answer 3

这是时态问题
1.如果用.has devoted to就是过去贡献对现在造成影响，但并没强调现在有贡献.
而has been devoted to意思为过去到现在都贡献者，对现在造成的影响是
他是一个很有作为的人，在这句话的意思中须要强调他现在仍然贡献的
2.第二空比较好理解，他演讲是将来的事，也就是下个星期，应该用一般将来时

Answer 4

devote是个及物动词，译为使....投入，后面不能直接加to
“who___ the research of wild animals all his life”
第二空是一般现在是表将来，此种表达方式主要用于按计划或安排等将要进行的动作。

Answer 5

devote oneself to, devote是及物动词，所以第一个空要用被动语态，be supposed to是应该，应当的意思啊

Answer 6

devote是非延续性动词，所以加been，而be supposed to指希望做某事，可以表将来时态