if引导从句还是主句

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if引导从句还是主句

当然是从句,并且是条件从句或者宾语从句.
If you came earlier,you wouldn't miss the train.(条件从句)
I don't know if they have finished the work or not.(宾语从句)

if是从句

条件状语从句 望采纳

从句