你用了which這應(yīng)該是一個(gè)從句吧,假設(shè)前面還有一個(gè)主句的情況下,從句可以寫成：
which can support us no matter how difficult the problem we confront becomes.confront 和 becomes 不是兩個(gè)謂語動(dòng)詞了嗎？how difficult the problem we confront becomes

we confront, 定語從句，修飾the problem,

這里的主句是how difficult the problem becomes.


becomes是和前面的problem構(gòu)成句子的。