观察下列句子，试着归纳其画线部分所包含的句型结构。

1．His discussion with his new boss, Hu Xin(HX), was to strongly influence his life as a reporter．

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2．Not only am I interested in photography, but I took a course at university, so it’s actually of special interest to me．

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3．He admitted that he knew the man who was supposed to have bribed him, but…

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