But I don't know if I think too much.为什么要把 if 改成whether?
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![But I don't know if I think too much.为什么要把 if 改成whether?](/uploads/image/z/9122537-65-7.jpg?t=But+I+don%27t+know+if+I+think+too+much.%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E6%8A%8A+if+%E6%94%B9%E6%88%90whether%3F)
But I don't know if I think too much.为什么要把 if 改成whether?
But I don't know if I think too much.为什么要把 if 改成whether?
But I don't know if I think too much.为什么要把 if 改成whether?
不用改为whether,if和whether都可以是“是否”的意思,都可以引导宾语从句.if要改为whether在下列几种场合:
1,当宾语从句有or not时;
2,引导主语从句;同位语从句和表语从句时;
3,做介词的宾语从句时.
4,与不定式连用时.
楼主的句子不在此列.