-beproficientin[at];haveagoodcommandof;master;begoodat;befamiliarwith;behotin;berightdownone'salley;beperfectin;beskilledin[at];bewellversedin;bepractisedin;beskillfulat[in];beacquaintedwith;haveanintimateknowledgeof;haveagoodknowledgeof;havetheknackof;haveanintimateacquaintancewithsth.[sb.];knowsth.verywell;beexpertin[at];knowfromAtoZ;besaturatedwith;beathomein;makeoneselfmasterof;begreatat[on];bewellupin;steepin;beaccomplishedin;bedeeplyreadin;beadabatsth.;beadeptinsth.;excelin;beconversantwith[in];getathoroughknowledgeof;beatone'sbestin;becertainlyAoneat;attain[acquire]proficiencyin;adabhandin;behandywith[at];oldhand(at);upone'sstreet:
haveagoodcommandofEnglish;精通英语
beproficientatanart;精通一种技艺