I help my mother cook dinner.中为什么有两个动词?老师说一个句子里只能有一个谓语动词.

i always help my mother. I have to help my mother ()dinner 英语作文i often help my mother Yes.i often help my mother.快 i often help my mother m( ) dinner I..(help)my mother cook next Monday I often help my mother do the housework.(改为同义句)I often help my mother ( ) ( ). I can help my mother on sundays提问help my mother I often help my mother with housework at home , i often help my mother with housework.(改成同义句) I ofent help my mother ___(clean)the house I often help my mother cook a meal on Sunday. I often help my mother _________(做家务活） I help my mother do housework 重写怎样 I usually help my mother on Sundays.改为过去式 I help my mother sweep the floor=( ) I always help my mother with the ____(shop) I always help my mother -----housework填介词.