應該是We  are  still  young.
主語:we.謂語動詞:are.狀語:still.表語:young.
如:
We are still young. so we've got plent of time.我們還年青,因此我們還有很多時間.
類似的句子:
Though we are young, we can still do something to help
(讓步狀語從句) (主句)
①複合句
②主句:we can still do something to help
(主語)(謂語)(賓語)(狀語)
從句:Though we are young
(從屬連詞)(主語)(系動詞)(表語)