has become a problem 与 has became a problem 的区别~
人气：109 ℃ 时间：2020-04-09 13:31:54
解答
前者正确.has/have+动词的过去分词是现在完成时结构,become的过去分词还是become.
推荐
- A generation gap has become a serious problem关于这的英语完形填空
- as a result ,airpollution has become a serious problem
- Nowadays(overpopulation)has become a problem we have to face 中become是不是应该用became
- A generous gap has become a serious problem.I read a r_______ about it in the newspaper,
- A generation gap has become a serious problem
- 12分之11、18分之7和6分之5 4分之5、3分之4和6分...
- （1）两个平行四边形A、B重叠在一起,重叠部分的面积是A的4分之1,是B的6分之1.已知A的面积是12平方厘米.求B比A的面积多多少平方厘米.
- )设X服从N（0,1）,(X1,X2,X3,X4,X5,X6)为来自总体X的简单随机样本,Y=（X1+X2+X3+)^2+(X4+X5+X6X)^2 求c,使得cy服从X^2(卡方分布)
猜你喜欢
