Question

【题目】My sister English since she was 9 years old. She can talk to foreigners freely.
A.learns
B.learnt
C.has learnt
D.have learnt

Answer 1

【答案】C
【解析】句意：我的妹妹自从九岁就开始学英语，她能够和外国人自由交谈。A,learns 学习，一般现在时，B，learnt 一般过去时C has learnt现在完成时Dhave learnt现在完成时 ，根据since可知句子是现在完成时，结构为have/has+过去分词，句子主语是My sister，第三人称单数，使用has，故选C