There is an apple on the table.否定句
There is an apple on the table.否定句
is there an apple on the table.否定句
is there an apple on the table?否定回答
there is an apple on the table 对句中的an 进行提问
There was an apple on the table复数句
there is an apple on the table 改为复数形式
There is only an apple on the table 改同义句 There is __ __ an a
There is only an apple on the table.There is ____ ___ an app
there is a box on the table.ln the box,there is an apple.the
There is an orange on the end table变为否定句
There is an apple on the table.There is a fish in the lake.这
There is an apple on the table.It is yours.(合并成一句)There is a