Various Rules

[Muslimah]

ما ma negates something in the past just like lam

As in Ayah 67 of Surat Al Emran:” ما كان إبراهيم يهوديا ولا نصرانيا ولكن كان حنيفا مسلما وما كان من المشركين”

If u look at it it means Ibraheem was not. As if u would say لم يكن " Abraham was not a Jew nor yet a Christian;"

So to put it in a simple form:

لا la is نهى nay do not do

لم lam and ما ma negates something in the past: لم أقرأ ما قرأت lam aqra-a / ma qara-at

لن is a challenge to one who would not be able to do something

لن تستطيع أن تحمل الطاولة

lan tastaee`a an tahmel atawellah

you will not be able to carry the table