：
一般现在时的构成：be(is,are,am,are) have(has)
除第三人称单数由动词原形加词尾-s或-es构成外，其他一律用动词原形
一般现在时的标志：
every day,usually,often,always,sometimes,never.
一般现在时的用法
1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。2) 客观真理，客观存在，科学事实。3) 表示格言或警句中。4) 现在时刻的状态、能力、性格、个性。
动词的第三人称单数变化
1、一般情况在词尾加-s 2、以字母s,x,ch,sh,o 结尾加-es
3、以辅音字母加y结尾的动词，先变y为i再加es
练习一（写出下列单词的第三人称单数）
1
help
11
fix
2
make
12
teach
3
swim
13
wash
4
leave
14
close
5
know
15
go
6
play
16
fly
7
get
17
carry
8
ride
18
study
9
boy
19
be
10
guess
20
have
练习二（用所给单词的适当形式填空）
1.We ______ (be) in the same city—Shenzhen.
2.There______(be)a ruler and four pencils in the box.
3.There______(be)four pencils and a ruler in the box.
4.She_______(have) black hair.
5.He _______(go) to school by bike every day.
6.Sandy usually______(get)up early in the morning.
7.My brother,Ken,________(watch)TV sometimes.
8.His father often_______(walk)after supper.
9.Does Peter_______(love)the new school?
10.Does the man_________(work) hard every day?
11.Do their parents usually ________(visit)China?
12.My aunt ________(not like) music in her spare time.
13.The students___________(not plant)trees every year.
