ENGLISH TENSES:
1.
Present Simple
a)
To Be (ser / estar)
b)
have got (tener)
c)
walk (caminar)
d)
can (poder, saber)
e)
must (+ obligación / - prohibición)
2.
Present Continuous (am / is / are + -ing)
3.
Present Simple and Present Continuous
4.
There is / There are
5.
a / an / some / any / the / there is / there are / How much? / How many?
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