she doesn't think she can learn about chinese history
否定前置是 she doesn'tthink she can learn about chinese history吗？ think不用加s？ 我们一起去看电影吧 翻译英文think当然不能加s，否定词do not/does not/did not后面都用动词原形.Let's go to a moive together.虽然不是正确答案，但是还是该你吧。请多多关照哦！