I saw the plane crash = I saw the entire incident. "Crash" is a noun I saw the plane [crashing into the building]. the bracketed is a particple phrase modifying "the plane", "Crashing" is a present particple depicting the prccess.
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Evo25I saw the plane crash or crashing into the mountain.( why it cannot be 'crashed')That's just the way English works with verbs of perception like see (and certain other verbs as well). The infinitive crash will be assumed to be in the past because the main verb (saw) is in the past. Likewise with the present: I see
Evo252 and 4 are the correct ones. The to reappears when the structure is passive.whatWhat about these clauses above?whichWhich one is correct?