时间:2018-12-13 作者:英语课 分类:新路径小学英语四年级下册(一起)


英语课

 



[00:03.19]Lesson T 


[00:04.88]The Life Cycle 1 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, tadpoles 2 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
  • 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 )
  • 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》
学英语单词
24-desmosterol
a dead dog
adscripted
bathoflore
biennium
blue-brown
bulk container
burring
canonical form of a linear hypothesis
cardiac neuralgia
carte-blanche preference principle
catcalling
Cattenom
chain excavator
chracter search
compound unit
contaction
cross pin head
cryogenic materials
cypraea boivinii
decontaminating apparatus
dihydrocodeinoney
discrete tonal feature
djelfa (jelfa)
drink-hail
drop-dead
Einville
equity tax
eumenol
expensive goods
fire detector
foil conductor
forest site
fusarium heterosporum
gainfully
geodetic control point
geometrical control
gondang waxes
gyrocontrol unit
heat insulator
hemoglobin quantitative test
high pressure sodium floodlight
high-water quadrature
hydroxyisogermafurenolide
hysterocyesis
initial floodplain
Jacobi matrix method
large-scale planetary wave
lime-milk stirrer
lovelife
machinist square
mackarell
marmezin
memory fault tolerance
movable crusher
mtfp (maximum total peaking factor)
multiple-pole switch
nonprojectile
not a dog's chance
nozzle-efficiency
nua
octal numeration system
path of vision
Perera
Petrovaradin
picea skiangensis cheng
pre-quel
primary sensor
proto-racial
pseudocetonurus septifer
rehobeth
retina synapse
retropleural
rough-water behavior
sabulous clay
Sarcocystidae
sequential disk file
shortening reaction
speech coders
spiritual needs
St-Just-Luzac
striae medullaris thalami
studio zoomar
Styichrome
tagged off
theodolite with compass
Thomson EMF
thoughtware
tolylene
tonnage mileage
tooters
torturedness
tracing papers
transsexes
ubermenschen
ueda
unrenovated
virtual field boundary
visco(si)meter
wave inception
wireless telephotograph
worm-chek