Jenny looks the same as before.
as引导比较状语从句,从句省略了主语和系词。
= Jenny looks the same as she did before. as在从句中作表语。did替代了looked。
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Jenny(主语)//(系动词) looks//(表语) the same //(引导比较状语从句)as (she looked/did )before (as引导比较状语从句,并在从句作looked 后的表语成分;before为比较状语从句的时间状语成分。)
参考译文:她现在看起来和它过去看起来一样。