薄板焊接一般现在时的基本用法及练习
一般现在时的用法
一般现在时表示人、事、物现在的状况和特点或表示经常性、习惯性的动作，句中常有always、often、usually等时间状语。现在时还可用于表达格言、科学事实、客观真理和至今不变的客观事实。
肯定式 | 疑问式 | 否定式 | 否定疑问式 |
I smile. | | | |
| 听的英语 You smile. | | | |
We smile | | | |
They smile. | | | |
He(She)smiles | | | |
| | | |
注意：
主语是任何一个单数名词或者是第三人称单数，谓语动词要进行必要的变化。特别提一点：不可数名词也算作单数处理。
动词第三人称单数的变化规则及发音规律
动词原形变第三人称单数的规则与发音规律同名词单数变复数大致相同，请认真观察。
1、大多数动词在词尾加“S”,在清辅音后发音为[s]，在浊辅音及元音后发音为[z]。
如：stop－stops [s] make－makes [s] read－reads [z] play－plays [z]
2、以辅音字母加“y”结尾的，要先将“y”变为“i”，然后在加“es”读[iz]
如：fly－flies [z]； carry－carries [z] study－studies [z]; worry－worries
3、以“s, x, ch, sh”结尾的，在词尾加“es”，发音为[iz]
如： teach－teaches [iz]; watch－watches [iz]
4、以“o”结尾的动词，加“es”，读[z]
如：go－goes [z] do－does [z]
You may not go now.你现在不可能去了。
2.谓语动词是实义动词，是在谓语动词前加do not 或does not后羿射日的读后感，谓语动词改用动词原型。
I don't have lunch at home.我在家没有吃午餐。
They don't play basketball on the sportsground.他们不在运动场上打篮球。
Mr.Jimmy doesn't know French.吉米先生不会法语。
一般现在时用来表示经常的或习惯性的动作，常与以下的时间状语连用：often 经常，always 总是，sometimes 有时，usually 通常，every day/ week 每天广州糕点/ 周等。
He/She usually goes to school by bike. 通常他/她骑车上学。
I visit my grandparents every week. 我每个星期都去看祖父母。
He/She is always late for class. 他/她总是上课迟到。
My parents and I sometimes go out to eat. 我和父母有时出去吃饭。
It often rains here. 这儿常常下雨。
一般现在时用法专练
（A）
Ⅰ.用括号内动词的适当形式填空。
1. He often (have) dinner at home.
2. Daniel and Tommy (be) members of the Reading Club.
3. She and I （take）a walk together every evening.
4. There (be) some water in the bottle.
5. We (not watch) TV on weekdays.
6. Nick (not do) his homework on Sundays.
7. they (like) the World Cup?
8. What they usually (do) on holidays?掩护近义词
9. your parents (read) newspapers every day?
咸菜炒肉10. The girl (teach) us English on Sundays.
Ⅱ.按照要求改写句子。
1. Daniel watches TV every evening. (改为否定句)
Daniel TV every evening.
2. I do my homework every day. (改为一般疑问句并作否定回答)
—— you homework every day？
——No, I .
3. She likes milk.（改为一般疑问句并作肯定回答）
—— she milk?
—— Yes, she .
4. Simon is from Beijing. (同义句改写)
Simon 二十四节气手抄报 Beijing.
5. Millie is clever at math. (同义句改写)
Millie 拍摄星空参数 math.
Ⅲ.改错。
1. Is you brother speak English?
A B C ( )
