A, (1) noun: letter a; (2) first-class; Evaluation mark of academic achievement reaching the highest standard (3) abbreviation [ampere]
A lot? (1) noun: sharing; Many; Fate; Lot (2) adverb: (used with adjectives and adverbs) Very, very; (used with verbs) very much. (3)j transitive verb: group and divide (often used with out); Divide (land) into several pieces. (4) Pronouns: many, many. (5) intransitive verbs: draw lots, draw lots.
Yes,? Preposition: about; Belong to; … of; Consists of ...
An |ot of is a phrase with many meanings, followed by a countable noun.
1esson means: (1) noun: class; Class. The plural is 1essons(2) and the transitive verb is lesson.
Therefore, the number of 1 means many courses and lessons.