Things which we have covered and considered important:
Countable and uncountable nouns:
1) Using much, many and some
She does not have much time.
Subject and verb agreement:
I sing, she sings, everyone sings.
We sing, They sing, All of us sing.
Simple Past tense:
these words as exposed from the units The Giant's Ice cream and The Jigaree
You may also want to refer to this post for the things we have to learn for this term.