<span>Ha принадлежность этих слов к глаголам указывает частица инфинитива 'to':
1) to fly, to crash, to land.
2) To cross, to swim.
3) to plant, to water.
</span>Ha принадлежность этих слов к существительным указывает неопределённый артикль 'a' и 'an' :
<span>1) A plane, a pilot.
2) a river, a lake, a ship, a boat, an island.
3)A tree, a seed, a flower. </span>
Where were you yesterday?
I was at home.
She was a student.
They were doctors.
He wasn’t at the cinema with us.
They are girls.
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