以下 8 种：
主语 + 谓语（不及物动词）。例如：The children are playing.
主语 + 谓语（及物动词）+ 宾语。例如：The giraffe is eating the leaves.
主语 + 谓语（及物动词）+ 间接宾语 + 直接宾语。例如：The postman gave the letter to her.
主语 + 谓语（及物动词）+ 宾语 + 宾语补足语。例如：The ant is carrying food to its nest.
There + be + 主语。例如：There is a book on the desk.
主语 + 系动词 + 表语。例如：The food is delicious.
主语 + 助动词 + 主语 + 系动词 + 表语。例如：It seems that the food is delicious.
主语 + had better + (not) do sth.例如：You had better rest after a long journey.
