2. 外语
  3. ______ you as soon as I know what______.

______ you as soon as I know what______.

admin2013-01-10  18
问题 ______ you as soon as I know what______.
选项 A、I’ll phone.., does happen
B、I’ll phone.., has happened
C、I am phoning...happens
D、I am going to phone...happens
答案B
解析 as soon as引导时间状语从句时，从句中通常用一般时替代将来时，主句则将来时。据此，可以排除C．be going to do sth．虽也表示将来，但侧重“打算做某事，安排好做某事”，故D也应予以排除。A中的does happen 强调谓语，此处不合题意。B中的 has happened 强调某种结果，符合题意，因此B为正确答案。
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