以不发音e结尾的单词， 去e +ing.
take---taking have---having
以ie结尾的动词，把ie 改为y，再 +ing.
lie---lying die---dying
1.do doing 3.run running 5. wash washing
2. leave leaving 4. tie tying 6. come coming
单数可数名词或this/tht/the +单数可数名词作主语 时，是第三人称单数。 a horse this book the cat
不可数名词作主语时为第三人称单数。 如：the milk the water
1. 大多数情况下，在词尾加“s” 2. 如：stop-stops read-reads play-plays 2. 以辅音字母加“y”结尾的，先把“y”变为“i”,再加es.
Be动词用于说明主语的特征、性质、 状态或其他与主语相关的属性。
Be动词的口诀
Be 动词，用处大， 随着人称来变化。 I后am, You后are, Is用于He,She,It. You, We, They是复数， 复数用are不会错。
1.人称 2.复数
1. I am a cute student. 2. He is a good boy. 3. His students are in the
My name is Andy. Now I am putting on my T-shirt.
Her name is Lisa. Now she is eating an apple.
His name is Jerry. Now he is reading a book.
