キャンデーをそんなにたくさん食べてはいけません。

candy; sweets

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

so much; so; like that

a lot; lots; plenty; many; a large number; much; a great deal; a good deal; enough; sufficient; enough; too many; too much

to eat; to live on (e.g. a salary); to live off; to subsist on

if ... then; when; and; why don't you...?; the more (one does something); because; since