look they're having fun ----( swim) in the river?为什么要填swimmi

来源：学生作业帮编辑：大师作文网作业帮分类：综合作业时间：2024/11/11 20:49:36

look they're having fun ----( swim) in the river?为什么要填swimming 而不是to swim?

前一句的Look!表明让别人看的是正在进行的动作行为,故必须用进行式.
请及时采纳,多谢!
再问：两个进行式之间不用加什么单词吗？如连词。谢谢！
再答：不加。正如楼下说的：have fun doing sth. 是一个固定用法。
再问：是要把have fun doing sth看作是一个动词，变进行式时就加are 在have后加ing吗？谢谢！
再答：是的。

look they're having fun ----( swim) in the river?为什么要填swimmi Look!They___(swim)in the river They (swim;are swimming)in the river Are they---------(swim)in the river now? Look!What's the boy doing in the river?He _____(swim).怎么填? They are having fun in the zoo Look!The kis ______（swim)in the river. Look,the boy ______ (swim) in the river. Look!They ________ in the river． Look!Jim is ____ in the river now.(swim) 1、Look!They________(swim）in the river. Look!A girl is ___(swim)in the river.