We began to learn English in 2000.to learn English的句子成分是什么?

We began to learn English in 2000.to learn English的句子成分是什么? She began to learn English in her ( ). We began to learn English two years ago.(Tom says) We began to learn English three years ago. we began to learn english three years ago 同义句 l began to learn english in junior middle schol这 His father began to learn English in his forties Mary began to learn English by herself in ( ) A, John began to learn English by himself in _____ I began to learn English three years ago.是什么时态 We started to learn English( ) English is easy to learn 这里的to learn 做什么句子成分