Do you know what they are?

New words: 1.sunlight n. 日光 ; 阳光 2.feed v.( fed / fed) 喂养 3.billion n. 十亿 ; 千兆

*How many plants do you think there are in the world? *How many plants can you name?

*How many parts do plants have? And what are they? *Why do plants have flowers? A plant has main four parts. They are flowers, stems, leaves and roots. Because flowers make seeds.

1.Flowers, leaves and stems grow above ground. Roots grow below ground. Language notes: 注意 :above 和 below 可以用于表 示度数或海拔 above 在 ….. 上方 below 在 ….. 下方

on 指 “ 在 …… 上面 ” ，面和面接触； above 指 “ 在 …… 上方 ” ， “ 高于 ” 某 物, 不一定垂直，； 物, 不一定垂直，； over 指 “ 在 …… 正上方 ” ，强调垂直 关系，不接触， 关系，不接触， on, above, over,

Ex. 1) There is a map_____ the wall. 2) The light is_____ the blackboard. 3) There is a bridge______ the river. above over on

below 与 above 相对, 指 “ 在 …… 下 方 ” ， “ 低于 ” 某物，不一定 方 ” ， “ 低于 ” 某物，不一定 垂直 垂直 under 与相对 over ，指 “ 在 …… 正下 ”, 强调垂直关系，不接触。 强调垂直关系，不接触。 below,under

Ex. 1) The ball is_______ the chair. 2)She painted green lines _____ the circles. 3)The temperature will stay_____ zero in the day,but it will fall_______ zero again at night. under below above below

2.Plants have flowers because the flowers make seeds. 注意 : 不可以与表示 “ 所以 ” 的 so 连用。 because because 连词,“ 因为 ” =I got many birthday gifts so I was very happy. I was very happy because I got many birthday gifts. e.g.

3.The seeds of the rice plant feed billions of people. *hundred, thousand, million, billion 前出现具体数字时, 本身用单数形式. e.g. two hundred three thousand three thousand four million four million five billion five billion

eg. hundreds of ( 上百的 …..) thousands of ( 上千的 ……) millions of ( 数百万的 …..) billions of ( 数十亿的 ……) *hundred, thousand, million, billion 表示一个笼统的概念时用做复数, 常与 of 连用。

Roots Stems Leaves Flowers Do you know? Fruits Seeds

1.There are five ____ students in our school. A.hundred B.hundreds C.hundreds of D.hundred of

2.There are _______ people in the world. A.billion B.billions C.billions of D.billion of

3.Which sentence is right? A. So I won’t go out because it’s raining now. B. I won’t go out so it’s raining now. C. Because I won’t go out so it’s raining now. D. I won’t go out because it’s raining now.

4.---What are leaves_____? ---Leaves make food for the ---Leaves make food for the plant. plant. A. to B. for C. in D. at

5.The stem holds the leaves and flowers in_____. A. a sunlight B. an sunlight C. the sunlight D. the sunlights

Plants of plants What is it for? Roots Stems Leaves Flowers LET’S DO IT! Talk about plants with your partner. What are the plants of plants for?