2022年六年级小升初英语语法--be动词的一般现在时

2022年六年级小升初英语语法be动词的一般现在时 一般现在时表示经常、习惯性发生的动作。be动词的一般现在时有am，is，are三种形式，由主语的人称和数来决定用哪一种。be动词一般现在时的否定句句型：主语+be动词的一般现在时（am，is，are）+not+…，例：肯定句：I am afraid of dogs.否定句：I am not afraid of dogs.肯定句：She is a good teacher.否定句：She is not a good teacher.肯定句：They are in the park.否定句：They are not in the park.一般疑问句的结构句型：Be动词的一般现在时（Am/Is/Are）+主语+…..?，例：1. Am I flying a kite? Yes, you are. / No, you aren't2. Is she reading books? Yes, she is. / No, she isn't3. Are they doing their homework? Yes, they are. / No, they aren't一般疑问句的回答在回答由be动词构成的一般疑问句时，要用Yes或No,句型如下：肯定回答Yes, 主语+be动词 否定回答No, 主语+be动词+not，例：A: Is your key on the table? B: Yes, it is. / No, it isn'tA: Are you at home? B: Yes, I am. / No, I'm not.be动词一般现在时的特殊疑问句1.特殊疑问句的结构，句型：疑问句+be动词+主语+….? 例：What is this? 这是什么？What are they? 他们是干什么的？Who is he? 他是谁？2.特殊疑问句的回答，特殊疑问句不能用yes或no来回答。回答时，be动词要视主语的情况而决定用am，is或are。例：What is the time now? 现在几点了？It is 7 o'clock. 7点钟了。There be句型There is a school there. (那里有一所学校。)1.There be句型的用法：There be句型表示“某地（场所）有/存在某物”，它的基本用法见下表：主语 句型单数可数名词 There is+单数可数名词+表示场所的词或短语不可数名词 There is+不可数名词+表示场所的词或短语复数名词 There are+复数名词+表示场所的词或短语例：There is a pineapple there. (那儿有一个菠萝。)There is some juice in the cup. (杯子里还有一些果汁。)There are many eggs in the kitchen. (厨房里有很多鸡蛋。)2.There be句型的否定句与疑问句：There be句型的否定句是在be的后面加not。例：There is not a computer on the desk. (桌子上没有电脑。)There are not any students in the playground. (操场上没有学生。)There be句型的一般疑问句是将be调到there的前面。例：Is there a computer on the desk? (桌子上有电脑吗？)Are there any students in the playground? (操场上有学生吗？)3.There be句型的特殊疑问句是在其一般疑问句前加相应的疑问词。例：A：How much water is there in the bottle? （墨水瓶里有多少墨水？）B：There is a little. (有一点儿了)A：How many people are there in your family? (你们家有几口人？)B：There are five. (有五口人)