Section Ⅲ Grammar and usage 阅读下列句子并体会加黑部分的用法，然后完成后面的题目 1．We know that being a teenager is sometimes difficult. 2．Before you write your post，however，take a look at other users’ posts first. 3．You can look through these articles to find advice on your problem. 4．It is likely that the matter has already been discussed on our forum. 5．Our website has many articles about teenagers’ physical and mental health. 6．If your problem is a new one，write a post about it. 7．Your parents do not always agree and that makes you feel unhappy. 8．It’s completely normal to struggle with the stress that parent-child tensions create. 9．I know，but my parents don’t seem to understand that. 1．简单句是只含有一个主谓结构的句子。如句3、5。 2．并列句由并列连词连接的两个或两个以上的简单句构成。如句7、9。 3．主从复合句由一个主句和一个或一个以上的从句构成。如句1、2、4、6、8。 句子的类型 一、简单句(Simple sentence) 简单句是由一个主语(或并列主语)和一个谓语(或并列谓语)构成的句子。有以下几种句式结构： 1．SV：主语＋谓语 The moon|rose.月亮升起来了。 Most birds|can fly.大部分鸟儿都会飞。 2．SVO：主语＋谓语＋宾语 Who|knows|the answer？谁知道答案？ Babies|should not wear|masks. 婴儿不应该戴口罩。 3．SVP：主语＋连系动词＋表语 The dinner|smells|good. 晚餐闻起来不错。 The most important task|is|to study hard. 最重要的任务是努力学习。 4．SVOO：主语＋谓语＋间接宾语＋直接宾语 She|offered|me|much help. 她给了我大量帮助。 It|gives|us|a great feeling of peace. 它给我们一种非常平静的感觉。 5．SVOC：主语＋谓语＋宾语＋宾语补足语 They|painted|the door|green. 他们把门漆成绿色。 I|consider|English|a very important subject. 我认为英语是一门非常重要的科目。 6．SVA：主语＋谓语＋状语 Time|passes|quickly.时光飞逝。 Chris and Tim|work|at a zoo. 克里斯和蒂姆在一家动物园工作。 7．SVOA：主语＋谓语＋宾语＋状语 She|is doing|her homework|carefully. 她正认真地做家庭作业。 Jane and her sister|are playing|computer games|at home. 简和她的姐姐正在家中玩电脑游戏。 8．There be... There|aren’t|many books on the shelf. 书架上没有多少书。 There|is|a chair，two desks，and a bed in the room.房间里有一把椅子、两张桌子和一张床。 二、并列句(Compound sentence) 并列句由并列连词连接的两个或两个以上并列而又独立的简单句构成。并列句的基本句式结构为“简单句＋并列连词＋简单句”。 常见的并列连词： 1．表示平行并列，常用的连词有and，not only...but also...，neither...nor...等。 He was cleaning the room and his children were playing outside. 他在打扫房间，他的孩子们在外面玩耍。 2．表示转折，常用的连词有but，yet。 His son came back，but he was still concerned. 他儿子回来了，但是他仍然很担心。 3．表示对比，常用的连词有while。 He likes sports，while I’d rather collect stamps. 他喜欢运动，而我更喜欢集邮。 4．表示因果，常用的连词有for，so。 It must have rained yesterday evening，for the ground is wet. 昨晚准是下雨了，因为地面是湿的。 The manager was ill so I went to the press conference in his place. 经理病了，所以我代他去参加新闻发布会。 [注意] so和because不能连用。 5．表示选择，常用的连词有or，eit ... ...
