be动词的用法动词的用法 beareisam表示表示“是是”I am a student.I am a nurse.I am a driver.结论1：当主语是I时，be动词用am.she is a girl.He is a boy.She is a teacher.It is a desk.结论2：当主语是he、she、it时，be动词用is.We are students.They are workers.You are doctors.结论3：当主语是we、you、they时be动词用are.The chicken is delicious!I 后后am,you后后are,he,she,it,不可数，不可数，后面全把后面全把is用。用。单数单数is,复数复数are,大家快快牢记它。大家快快牢记它。be动词的记忆口诀动词的记忆口诀practise1.The cat_on the desk.2.I _ from China.3.She _a student.4.Some tea _ in the glass.5.The books_under the table.isamisisare
