To date, more than 200 national teacher-training seminars have been held, training more than 60,000 teachers in the method. Where then did Zhang's inspiration to focus on vocabulary and grammar come from?
至今舉辦了二百多次全國師資培訓班，培訓了六萬多名英語老師。令人好奇的是，張思中這套單字、文法集中學習的靈感究竟從何而來？