英文: By around age three, George has ceased using null subjects, and has the following proportions for overt subject use: he uses full NP subjects 25% of the time, and pronominal
subjects 75% of the time.
中文: 大约到了三岁，乔治开始减少使用空主语，而使用清楚主语的比例如下：他使用完整名词词组当主语占25%，代名词当主语占75%。 更详细...
英文: Early on in his acquisition of English, George sometimes uses full NP subjects, sometimes uses pronominal
subjects, and sometimes uses null subjects.
中文: 起初在习得英语时，乔治有时会用完整的名词词组当主语，有时用代名词当主语，而有时用空主语。 更详细...
英文: Let's assume that proportions of full NP to pronominal
subjects stays constant throughout development.
中文: 假设在他语言发展期间，完整名词词组到代名词当主语的比例维持不变。 更详细...