在英语中，评价演员演技好可以用以下表达：
He/She is a talented actor/actress with excellent acting skills.
The actor/actress is able to command attention from all sides by the dynamic qualities of their performances.
His vivid acting helps the character come to life.
His acting is top-notch and truly moving.
如果演员的演技较差，可以说：
His/Her acting lacks depth, which shows poor acting skills.
Their performances feel flat and lack emotional resonance.
这些表达可以帮助你准确地描述演员的演技水平，无论是正面还是负面。