劍橋詞典in a clause , the verb that contains the meaning , compared with any auxiliary verbs that go with it 主要?jiǎng)釉~（句子中與助動(dòng)詞相比較有意義的動(dòng)詞） In "I should have been studying ", "studying " is the main verb . 在 I should have been studying 這個(gè)句子中，studying 是主要?jiǎng)釉~。 返回 main verb