- 44 Intro to adjectives _ The parts of speech _ Grammar _ Khan Academy 视频 0 次下载
- 45 Intro to articles _ The parts of speech _ Grammar _ Khan Academy 视频 0 次下载
- 47 Intro to adverbs _ The parts of speech _ Grammar _ Khan Academy 视频 0 次下载
- 48 Adjective order _ The parts of speech _ Grammar _ Khan Academy 视频 0 次下载
- 49 Adjectives and commas _ Adjectives _ Khan Academy 视频 0 次下载