Negative past: We did not (verb)....We did not eat ice cream. We did not sleep in class.
Negative present: We do not (verb)... We do not like cilantro. We do not text in class. We do not understand. (Yes we do.)
Negative future: We will not (verb)...We will not come on Monday. We will not speak Spanish in class. We will not give up. *** We can say "won't" instead of "will not".
Comparisons: We practiced in Grammar Links 1
(noun) ... (verb)...(adjective/adverb)...THAN...(noun)
The cheetah is faster than the turtle.
Here are rules and examples. Here is more explanation.
Practice here:
comparison book_ practice