has become後面加什麼

形容詞或名詞

"has become"是現在完成時的結構，後面應該接形容詞或名詞。現在完成時的構成是"have(has)+過去分詞"，而"become"的過去式是"became"，過去分詞是"become"。因此，"has become"後面可以接形容詞或名詞，例如："has become happy"或"has become a teacher"。