从Grammar-Practice-book-Grade1和Grade 3比较看,对sentence的definition二年中只附加了一句话:
Every sentence begins with a capital letter.definition几乎完全相同:
Grade1:A sentence is a group of words that tells a whole idea.
Grade3:A sentence is a group of words that tells a complete thought.
关于Subject
Grade 1:The subject of the sentence is the part that tells who or what the sentence is about.
Grade2: Every sentence has two parts.
• The subject tells who or what does something.
Grade 3:The subject of a sentence is whom or what the sentence is
about.
• The subject can be one word or more than one word.
一年级只强调subject的definition。
二年级附加句子最基本结构,实际上将G1和G2的定义合并的话,
将是中国学生能更有理解的完整的关于主语的定义。
即说明主语是整个句子所谈论的主题,又有可能是谓语动作的发出者。
三年级开始提醒学生注意主语的构成。
一步一步很踏实。时间充足的话,按部就班很好。