Semantic prosody has been one of the most important topics in corpus linguistics.Synonyms are difficult for English learners to learn.Traditional teaching methods mostly distinguish them in terms of their meaning,not their usage.This study uses a corpus-based approach to illustrate how to distinguish and employ the synonyms.This study uses the British Academic Written English(BAWE)Corpus,and chooses“lead to”and“result in”to explore their usage from the perspective and semantic prosody.The approach can help learners to understand and use those words or phrases with the same or similar meanings.