作业帮10.Some people viewed the findings with caution,noting that a cause-and-effect relationship...Some people viewed the findings with caution,noting that a cause-and-effect relationship between passive somking and cancer remains____.A.to have shownB.to
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10.Some people viewed the findings with caution,noting that a cause-and-effect relationship...Some people viewed the findings with caution,noting that a cause-and-effect relationship between passive somking and cancer remains____.A.to have shownB.to
10.Some people viewed the findings with caution,noting that a cause-and-effect relationship...
Some people viewed the findings with caution,noting that a cause-and-effect relationship between passive somking and cancer remains____.
A.to have shown
B.to be shown
C.to have been shown
D.being shown
为什么选B,我基础不好,请讲详细点,分析考点及解题思路
10.Some people viewed the findings with caution,noting that a cause-and-effect relationship...Some people viewed the findings with caution,noting that a cause-and-effect relationship between passive somking and cancer remains____.A.to have shownB.to
首先理通整个句子：有些人仍然对这个结果持有观望态度,因为还没有发现被动吸烟和癌症有直接因果关系的证据.
这里remains to be seen 对应的就是中文里“还没有发现”
还没有发现是以人为主语
而这个英文句子中那个“被动吸烟与癌症有直接因果关系”是主语,是“被发现、被显示”所以用被动语态 选B
所以做题时,最先要做的猜出句子想要表达的意思
只有答案B在这个句子里有意义。
答案A表示已经发生的行为
答案C是答案A的被动型态
答案D不可以与remain合用（中国老师说不合乎语法，外国人说没有人这样说话）。
有些人以谨慎的态度看待这些发现指出,一个之间的因果关系,被动吸烟和癌症仍然是____
A来显示.
B要显示
remain to be done
固定搭配
只能选择B，因为其他都不合语法