试题题干
Krashen and Terrell stated, “Only when people understand messages in the target language can 
take place.”
参考答案
试题解析
Krashen and Terrell stated, “Only when people understand messages in the target language can acquisition take place.” Krashen and Terrell说:“只有当人们理解目标语言中的信息时，才能获得信息。”