Let’s is the english cohortative word, meaning “let us” in an exhortation of the group including the speaker to do something. Lets is the third person singular present tense form of the verb let meaning. Jun 14, 2011it's actually the opposite of "or even." the excellent example below of "i wouldn't go near a stingray, let alone pet one" demonstrates this.
Aug 29, 2013i find the distinction that macmillan makes between not to mention and the supposedly synonymous let alone and still/much/even less useful: The phrases let alone and still/much/even less. Otherwise, know that a basic search will turn up let us in innumerable journal articles, official proclamations, formal invitations,.
Feb 23, 2016in "let's get started", the starting point is in view and "let's get going", you are on the starting point already. Jan 12, 2016don't let's forget the 1943 noel coward song "don't let's be beastly to the germans". If we un-contract, it becomes "do not let us be beastly to the germans" which is perfectly acceptable.
"let me know" can but doesn't really acquire useful meaning without a context. Oct 3, 2011"let us go/let us pray" is a special verb construction of the type let, imperative+us,accusative+bare infinitive.
