初中英语动词时态讲解 Sicilia Zhang动词的构成1. be 动词2. 助动词3. 情态动词4. 系动词5. 实义动词 be 动词n be 动词的几种形式1) am is are2) was were3) being4) Been be 动词的用法1. 与名词、数词、形容词、介词连用1) I am a doctor.2) He is ten.3) They are tired.4) The cat is under the table. be 动词的用法2. There be 句型1) 用于不可数名词和可数名词单数之前There is a pen on the desk.There is some water in the glass.2) 用于复数名词之前There are some sheep in the hill.3) 用于一般将来时There is going to be a film in our school next Sunday.4) 用于一般过去时There was a book on the desk yesterday.注意：请根据时态和句中的名词选择适
