Chalk ‘n’ Talk from http://www.businessenglishpod.com/category/grammar/ is a new series of video ESL lessons exploring advanced English grammar topics. The first lesson examines the use of perfect tenses in both the simple and continuous aspect – past, present and future forms. In grammatical terms, perfect tenses are used to refer to completed or finished events.
楽しく英語学習！おすすめ動画チャンネルまとめ
