如题所述
Do as l told you 是正确的.理由：as是个连词,表示“像……一样”,引导方式状语从句.
Do as what I told you是错误的.理由：as表示“像……一样”时,是个连词,不是介词.
而what I told you 是个宾语从句,只能作动词或介词的宾语,故不能用在连词as后面.该句可改为：Do what I told you.
望尽快采纳