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
abutting surface
acoustic (echo) sounder
across the bow
actinolysin
action spot
antilipidemics
aristarch
arteriae cerebri media
bath-room
battery-park
benthophyte
benzaldehyde-o-sulfonic acid (sodium salt)
biofiltration
blanch over
cancellation law of addition
candlewax
clematite
Clifton Hampden
closed loop adaptive optical system
Cocker, Edward
coincidence scintillation spectrometer
composite file
controlled postmortem programme
cornu anterius
costustroot
covetous
cream of wheat
Damm faience
degree of suction vacuum
deliberative vote
dey-wife
donatis
drawing size
drm
duty - free shop
electrocapilarity
elida
encephalopsy
estars
flattened both on the outer surface
formed threading tool
fossae cranii media
four frequency dilex communication
g.l
glacier mill, glacier well
gondola lift
hammerings
hepatophage
heteroimmunity
holsters
hyposcopic view
identifed
Igunga
inertia principal axis system
inverted file index
JEUNE
Jew's slime
Jun kiln
Kristeller technique
lap on
lccieb
lincomycin series antibiotics
marsupialation
mastopathia
matchwinnings
multihead Turing machine
myoalbumose
N-methyl-2-pyrrollidone
noctilucin
nylon molded gear
ornithogalum umbellatums
perturbed structure
photo-sensitive
plea of guilty
Porroh
Port Harcourt
production target
prototyping card system
rate of insufficient sifting
rectifier type echo suppressor
reproachingly
Robert Peel
scalar function
self introduction
shaving horse
sick as a parrot
sick fuck
side gallery
soaker at hip
stirring screw conveyer
surface propeller
sword cane
thallium(i) acetate
the tide
Triumfetta semitriloba
tube resonator
unwedset
wadi
well-rehearsed
wine storage
wire grate concave
Xsectional