行为动作的主语为第一、三人称时，祈使句通带以Let开头：，let,单词记忆法、语法用法，与let, 相关例句、名人名言

let单词相关例句：

As they sow, so let them reap. 种瓜得瓜，种豆得豆。
Not let the grass grow under one's feet. 不失时机。
Speak clearly if you speak at all, Carve every word before you let it fall. 要说就索性说得一清二楚，说出前每句话要字斟句酌。
If you would build for your happiness a sure foundation, let the stone for the corner be a good reputation. 若想为快乐奠立可靠的基础，美好的名声便是奠基的石头。
Don't let poor Nelly (his mistress, Nell Gwynne )starve. Charles ll, King of England  不要让可怜的莱莉（他的情妇）饿着。英国国王 查理二世  
LFollow your own course, and let people talk.   Aleghieri Dante, Italian poet——让人家去说吧，走你自己的路。   意大利诗人  但丁.A.   
Laws catch flies but let hornets go free. 法网只捉苍蝇，不捉黄蜂。
If you would go up high , then use your own legs ! Do not let yourselves carried aloft; do not seat yourselves on other people's backs and heads . (F. W . Nietzsche , German Philosopher)——如果你想走到高处，就要使用自己的两条腿！不要让别人把你抬到高处；不要坐在别人的背上和头上。(德国哲学家 尼采. F. W.)  
A word spoken is an arrow let fly. 一言既出，驷马难追。
At Easter let your clothes be new,or else be sure you will it rue. 复活节不穿新衣裳,日后不免要懊丧.