Since I came to China,I__________ (learn)a lot about Chinese historySince I came to China,I’ve been learning a lot about my family history.这句是成立的！
问题描述：
Since I came to China,I__________ (learn)a lot about Chinese history
Since I came to China,I’ve been learning a lot about my family history.这句是成立的！
答
Since I came to China,I____have learnt______ (learn)a lot about Chinese history.
自从我来到中国以后，我已经了解了很多的中国历史。
这里要用现在完成时态
答
Since是现在完成时的关键词，一般有积累等语意，所以空白处应用现在完成时，主语是‘I’所以用‘have done’的公式，填入：have learned。祝你学习进步O(∩_∩)O~
答
have learnt
答
have learned 已经了解/学习到
自从我来到中国以后，我已经了解了很多的中国历史。
答
since后常跟过去式,主句用现在完成时.故：Since I came to China,I have learned (learn)a lot about Chinese history自从我来到中国以后,我已经了解了很多的中国历史.since后常跟过去式,主句用现在完成进行时也行,...
答
去学习，去游泳
解释是：这是+形容词。 +做某事
教某人做某事
放在动词的句子，其次副本