We will be in danger if we do not refuge in the cellars of our
houses when a tornado comes.
這個句子不看「when a tornado comes」，只看「We will be in danger if
we do not refuge in the cellars of our houses」的話，「We will be
in danger」是主要子句，「if we do not refuge in the cellars of our
houses」是從屬子句
小弟的問題是：「We will be in danger」加「if we do not refuge in
the cellars of our houses」已經是主從複合的結構；「when a tornado comes
」這個句子也是從屬子句 那「We will be in danger if we do not refuge in the
cellars of our houses when a tornado comes.」這整個句子結構是不是可以分
析成：「we do not refuge in the cellars of our houses」是主句，「
when a tornado comes」是從句，要併入「We will be in danger」這個主句裡
，「we do not refuge in the cellars of our houses when a tornado
comes」要把它變成從句用 if 引導呢？
還是說可以分析成：「We will be in danger 」是主句， 「if we do not
refuge in the cellars of our houses」是從屬子句，從屬子句充當主要子句裡
的某一個成份，因「if we do not refuge in the cellars of our houses」
這個從屬子句已經併入「We will be in danger 」當副詞用(副詞子句)，所以對「
when a tornado comes」來講，「We will be in danger if we do not
refuge in the cellars of our houses」這整個句子是「主要句」呢？
以上 感謝大家
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