The type of the passage
文章的类型
What kind of types we have learned?
Text,dialogue
What kind of type of this passage?
A letter.

一般现在时
(经常发生的动作)
标志词: always, usually, often, sometimes,
seldom, never,every
动词的变化:只有第三人称单数的时候发生变
当主语是第三人称单数的时候，谓语动词:
1.多数在谓语动词后面加s play-plays
2.以s,x,ch,sh结尾时要加es watch-watches
3以辅音字母加y结尾时，改y为i加es fly一flies
.4.以元音字母加y结尾时，直接加s buy-buys
5.不规则变化have- has

现在进行时
(正在进行的动作)
标志词: now, listen， look, it's+时间
表示正在进行的动作
结构: be+ving
be: am, are, is
i am watching TV.
She is doing her homework.