who rescued
The three firemen who rescued (rescue) the three people in the fire were highly praised.
who rescued the three people修饰主语 the three firemen,做定语.
后边谓语用的是were,过去式,所以定语中用了rescued.
who rescued
The three firemen who rescued (rescue) the three people in the fire were highly praised.
who rescued the three people修饰主语 the three firemen,做定语.
后边谓语用的是were,过去式,所以定语中用了rescued.