If someone told you '' the guard said we can't play here, so let's move elsewhere " (direct from guard to someone "you can't play here" ) would you understand them? In other words, is it mandatory to change the tense of verbs to past when saying what someone said " the guard said we couldn't play here so let's move elsewhere " for you to understand correctly ?.
If so, should all the verbs be changed ? Assuming the Direct sentence is " We will stop the plane before it lands " Which one is the correct sentence for an indirect sentence:
They said they would stop the plane before it landed ?
or
They said they would stop the plane before it lands ?