小学英语中的“一般现在时态”是学习英语语法的基础部分，它主要用来描述经常性、习惯性的动作、事物的特征或状态以及客观事实。以下是对这个时态的详细解释及练习题解析：
**1. 一般现在时态的用法**
- **表示特征和状态**：比如"The sky is blue."（天空是蓝色的），这类句子描述的是恒久不变的事实。
- **表示习惯性动作**：例如"I get up at six every day."（我每天六点起床），这类句子描述的是个人日常习惯。
- **表达客观现实**：如"The earth goes around the sun."（地球绕着太阳转），这是一条科学真理，不受时间影响。
**2. 一般现在时态的构成**
- **be动词形式**：适用于所有人称，如"I am", "You are", "He/She/It is", "We are", "You are", "They are"，后面跟其他成分。
- **行为动词**：主语+动词原形，但当主语为第三人称单数（he, she, it）时，动词需加上-s或-es，如"Mary likes Chinese."（玛丽喜欢汉语）。
**3. 句型变换**
- **否定句**：be动词后加"not"，行为动词前加don't/doesn't。
- **一般疑问句**：be动词提前，行为动词前加do/does。
- **特殊疑问句**：疑问词+一般疑问句结构。
**练习题解析**
**一、写出动词的第三人称单数形式：**
drink → drinks
go → goes
stay → stays
make → makes
look → looks
have → has
pass → passes
carry → carries
come → comes
watch → watches
plant → plants
fly → flies
study → studies
brush → brushes
do → does
teach → teaches
**二、用括号内动词的适当形式填空：**
1. He often _has_ dinner at home.
2. Daniel and Tommy _are_ in Class One.
3. We _don't watch_ TV on Monday.
4. Nick _doesn't go_ to the zoo on Sunday.
5. _Do_ they _like_ the World Cup?
6. What _do_ they often _do_ on Saturdays?
7. _Do_ your parents _read_ newspapers every day?
8. The girl _teaches_ us English on Sundays.
9. She and I _take_ a walk together every evening.
10. There _is_ some water in the bottle.
11. Mike _likes_ cooking.
12. They _have_ the same hobby.
13. My aunt _looks_ after her baby carefully.
14. You always _do_ your homework well.
15. I _am_ ill. I'm staying in bed.
16. She _goes_ to school from Monday to Friday.
17. Liu Tao _does not_ like PE.
18. The child often _reads_ books before bedtime.
这些练习题旨在帮助学生巩固一般现在时态的用法，包括动词第三人称单数形式的应用，以及在不同句型中的变化规则。通过这样的练习，学生可以更好地理解和掌握一般现在时态，并能准确地在实际语境中运用。
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