2. 外语
  3. Only when I watched TV last night ______ what ______.

Only when I watched TV last night ______ what ______.

admin2009-02-15  22
问题 Only when I watched TV last night ______ what ______.
选项 A、I learned / was happening
B、did I learn / had happened
C、learned I / had happened
D、did I learn / would happen
答案B
解析 当only修饰副词、介词短语或状语从句放在句首时，句子要倒装，而且这种倒装是部分倒装。如：①only by changing the way we live call we save the boy.②Only then did I realize that many of the things that I did were bad for the environment．本道题目是only引导when的时间状语从句，因此句子要部分倒装。由于有时间词last night提示，时态上要选择过去时，助动词did要提前。所以答案为[B]。
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