saw 和 did 时态不对,应该对应have been blind,用现在完成时。wordy。frequent 不能修饰动词。
时态错误,一项研究结果显示的内容应该是一个一般现在的情况.
1,修饰speaking应该用副词frequently 2,时态错误 一般现在的情况用do
第一个平行saw时态错了,did应为do
saw 和did 的时态不对
saw 和前面HAVE BEEN不平行,make和did时态不一致
"have been blind from birth"要与"have never seen"对等,此句中划线部分是“who thus never saw”不对等
1. 平行: have been blind from birth // have never seen... 2. frequently 3. make hand motions // do
as sighted people did 时态不对
who have been blind from birth,和never saw anyone gesturing、as sighted people did时态不一致。
把网站装进口袋
随时随地练习