新路径小学英语四年级下册(一起) Lesson T

 

[00:03.19]Lesson T 

[00:04.88]The Life Cycle¹ of a Frog 

[00:07.79]Let's talk. 

[00:09.29]Hello! Welcome to "About Animals." 

[00:12.64]Today we're going to talk

[00:14.62]about the life cycle of a frog. 

[00:16.74]Adult frogs lay eggs in spring.

[00:19.99]After about two weeks, tadpoles² come out.

[00:22.76]About five weeks old, they have back legs.

[00:27.52]About ten weeks old, they have front legs, too.

[00:31.67]Their tails become short and then they are called froglets.

[00:35.65]The froglets eat small animals such as flies and then become young frogs.

[00:41.53]They live on land for two or three years and become adults.

[00:44.98]Then they go back to water to lay eggs. 

[00:49.57]Magic box 

[00:52.64]adult frog 

[00:54.91]lay eggs 

[00:57.82]froglet 

[00:59.93]froglet 

[01:02.27]back leg 

[01:03.44]front leg 

[01:05.15]week 

1 cycle   

n.周期，循环，自行车；vi.循环，轮转，骑自行车；vt.使循环

参考例句：

• The seasons of the year make a cycle.一年四季构成一个循环。
• Do you cycle to work everyday?你每天骑自行车上班吗？

2 tadpoles   

n.蝌蚪( tadpole的名词复数 )

参考例句：

• The pond teemed with tadpoles. 池子里有很多蝌蚪。 来自《简明英汉词典》
• Both fish and tadpoles have gills. 鱼和蝌蚪都有鳃。 来自《现代汉英综合大词典》