1There are many students in the classroom.
2、在公园里有一些孩子There are some children in the park.
3.There are some boys playing soccer on the playground.
4、在桌子上有一些汉堡。There are some hamburgers on the table.
改为过去时态时只有把are 变为were即可。
写出10个不规则动词及过去式:go-went,see-saw.is--was,are--were,read--read,sing--sang,do--did,write--wrote,run--ran,put--put
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