介词有助于将英语学习用于日常活动
A preposition is a word such as atfer in ,to,on,and with. prepositions are usually used in front of nouns or pronouns and they show the relationship between the noun or pronoun and other words in a sentence. Prepositions are words which begin preposition phrases. A preposition is a word used to link nouns pronouns or phrases to other words within a sentence.