题目内容
4．-When will Mr．Black be back to China？-Sorry．I don't know_________．（ ）
| A． | why did he go abroad | B． | how long he will stay abroad | ||
| C． | How soon will he return |
分析 --Black先生什么时候将回到中国？
--抱歉．我不知道他将在国外呆多长时间．
解答 答案：B．
根据I don't know可知，本题考查宾语从句，宾语从句中一般为陈述语序，选项AC是疑问语序，所以排除掉；选项B是陈述句语序，符合宾语从句的语序要求．故选B．
点评 本题考查宾语从句，做题时注意三要素时态、语序和引导词．本题先考虑语序问题，再根据句子的上下文的意思，做出选择．
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