I wrote a letter last night. 主谓宾: i =主语,wrote=谓语, a letter =宾语
all my brothers are college students. 主系表: all my brothers =主语,are=系动词, college students=表语。
please pass me that dictionary . 祈使句。 pass加双宾馆.或者是:please pass that dictionary to me.
there is no meeting tonight.
追问there is no meeting tonight.最后的呢
非常感谢
追答这是存在句型。对主谓宾区分不那么强调,你会句型就可以了:there is /there are+存在对象。