什么是大略句？ 只有一个主谓宾构造的句子：
They worked day and night.
I went and boughtsome fruit just now.
大略句和复合句的差异：
大略句只有一个主谓构造；而复合句包括两个或者两个以上主谓构造。
试比较：
she knew it.（大略句）
she has known it and we needn't tell her about it.(复合句：并列句）
she knew thathe had come back from London.(复合句：宾语从句）
大略句的五种基本句型
1.“主语+谓语”（即“主谓”句型）
They worked day and night.
2.'主语+谓语+宾语“（即”主谓宾“句型）
He raised his arms.
3.'主语+系动词+表语“（即”主系表“句型）
I am a teacher.
4.”主语+谓语+间接宾语+直接宾语“（即”主谓双宾“句型）
Miss Zhang gave us an English lesson.
Miss Zhang gave an English lesson to us.
5.'主语+谓语+宾语+宾语补足语“（即”主谓宾宾补“句型)
I heard her singing in the next room this time yesterday.
