英语句子成分分析
1 it is my birthday so my mother gives me a birthday cake
2 i don't think i will be bored in Ms shen 'calss
3 the school year is divided into two semesters,the first of which is from September to December
2.think 后边是宾语从句,省略that
the first of which 引导一个定语从句,which 指代前面的two semesters,在定语中做主语
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