have和has加过去分词是什么时态

　　The latest model has over 100 new features.

　　最新的款式有100多种新特色。

　　The two groups of children have quite different characteristics.

　　这两组儿童具有截然不同的特点。

　　Now she won't have to go out to work any more.

　　现在她不必再出去工作了。

　　There has been a high uptake of the free training.

　　免费培训有很多人参加。

　　His quality of life has improved dramatically since the operation.

　　手术后他的生活质量大大改善了。