關於when型態的問題

Tell him the truth when he comes tomorrow.
We are never told when she will come next season.

請問這兩句皆是副詞子句嗎?
想請教為什麼一個是使用現在,一個是使用will
Update: 謝謝知識長的回答<0>
想在請教您一個問題:
when he comes tomorrow是副詞子句,
when she will come next season是名詞子句,
其實我不曉得要如何判斷副詞子句與名詞子句,
所以才不懂什麼時候型態是現在式代替未來式,
希望能再次得到指導! tks!
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