i am writing this letter to thank you for teaching me english this summer

问题描述:

i am writing this letter to thank you for teaching me english this summer
i am writing this letter to thank you for teaching me english this summer
宾语补足语是TO thank you for teahcing me english 分析这个句子的成分

i主语
am writing谓语
this letter宾语
to thank youfor teaching me english this summer宾补
其中不定式短语里还包含一个类似于“宾补”的结构,介宾短语作宾补