too big for one's breeches [boots]
夜郎自大。
Too many cooks spoil the broth.
【谚】两个和尚抬水喝，三个和尚没水喝。
too many irons in the fire
职务太多。
too much for one
【口】力不敌；对(某人)而言太困难。
too much of a good thing
受不了。
too much water drowned the miller
过犹不及；过分则招祸。
be one too many for
非...所能敌；胜过。
can't do too much
即使...也不过分。
carry [go] (sth) too far
过份；超出限度。