1 .前面这个句子不对. ten years ago 不能跟完成时连用.
建议改为: He went abroad ten years ago.
2. 后面句子也有问题, aready 不用于否定句, 可以用yet 代替.yet 一般不再跟for 10 years 一起连用了
建议改为:He hasn't yet returned home. 或者He hasn't returned home for 10 years.
1 .前面这个句子不对. ten years ago 不能跟完成时连用.
建议改为: He went abroad ten years ago.
2. 后面句子也有问题, aready 不用于否定句, 可以用yet 代替.yet 一般不再跟for 10 years 一起连用了
建议改为:He hasn't yet returned home. 或者He hasn't returned home for 10 years.