第 78 课: 使用更多的动词：跳，爬，看，叼等-1

The boy is going to jump. 那个男孩儿要跳了

The boy is jumping. 那个男孩儿在跳

The boy has jumped. 那个男孩儿已经跳了

The boy is swimming. 那个男孩儿在游泳

The boy is going to jump over the sticks. 那个男孩儿要从那些木杆上跳过去

The boy is jumping over the sticks. 那个男孩儿在从那些木杆上跳过去

The boy has jumped over the sticks. 那个男孩儿已经从那些木杆上跳了过去

The boy is swimming underwater. 那个男孩儿正在水下游泳