课件26张PPT。Unit 5 Dinosaurs
It is a dog but it doesn’t bite or bark.
hot dogWhat has hands but no feet, a face but no eyes, tells but not talk? clock.Let me guess!They don’t live on the earth now but they
lived on the earth long time ago.
Some are very big some are not. Some can
even fly. They are very powerful.
dinosaursis very
eats
has teeth
walks
does not
Its brain is very
maybe it is not .longplantssmallslowlyfly or swimsmallcleverDiplodocusis very
eats
has teeth
runs
does not
has a roar
Maybe it is very .bigmeatsharpfastfly or swimloudrudeTyrannosaurus
Rexis not so nor so
eats
drinks a lot of
has a lot of
runs but does not
does not
lives near
bigsmallfishwaterteethflyswimlakeBaryonyxWhen did the dinosaurs live on Earth?
When did they die?They lived on Earth 100,000,000 years ago.
They died 65,000,000 years ago.Think of it.is very long
eats plants
has small teeth
walks slowly
does not fly
His brain is very small
maybe it is not clever. very long
plants
small teeth
slowly
not fly
His brain very small
maybe it not clever.wasatehadwalkeddid waswas100,000,000
years agoDiplodocusTyrannosaurus
Rexis very big
eats meat
has sharp teeth
runs fast
does not fly
has a loud roar
Maybe it is very rude .100,000,000
years ago very big
meat
sharp teeth
fast
not fly
a loud roar
Maybe it very rude .wasatehad randidhadwasBaryonyxis not so big nor so small
eats fish
drinks a lot of water
has a lot of teeth
runs but does not fly
does not swim
lives near lakes
100,000,000
years ago not so big nor so small
fish
a lot of water
a lot of teeth
but not fly
not swim
near lakes
wasatedrankhadrandiddidlived不规则动词变化规则
I. 过去式与动词原形同形。例如:
let—let, put—put , hit—hit, read—read [red]等。
II.动词原形以 ow/aw 结尾,过去式常变为 ew 。例如:??? know—knew, grow—grew, throw—threw, draw—drew等。
但是也有一些例外,例如:show—showed。
III.许多动词只要将动词原形中的元音字母 i 改为 a ,就 可变为过去式。例如:??? begin—began, give—gave, sing—sang, swim—swam,
sit—sat, drink— drank, ring—rang 等。??? ?但是 win—won , rise---rose例外。IV.有些动词的过去式以 o(a)ught 结尾。例如:??? bring—brought, buy—bought, think—thought,
catch—caught, teach—taught等。?? [注意]上述动词过去式究竟是以ought还是aught结尾,
只要记住“有a则a,无a则o”即可。 ??? 即:原形中有a的,????? ?过去式变为aught,否则为ought。
V. 以eep结尾的动词,常将 eep 改为 ept 构成过去式。 例如:
keep—kept, sleep—slept, sweep—swept等。 Write the past tense of the following words.am
are
does
will
can
shall
think
catch
buy
take
shake
stand
have
sit
get
see
tell
fly
hear
was
were
did
would
could
should
thought
caught
bought
took
shook
stoodhad
sat
got
saw
told
flew
heardFill in the blanks with the proper form of the verbs.1.Tim_______(write) a letter to his friend last week.
2.My brother_______(catch) the first bus to school yesterday.
3.He______(know) less English words when he was seven years old.
4. They_______(keep) doing the work and never gave up.
5. Did you _____(run) as fast as Jacky?wrotecaughtknewkeptrunRewrite the following sentences.1. She sang beautifully.(感叹句)2. Tom did some reading for two hours.(就划线部分提问)3. Few people went to the park for fishing,____________?
(反义疑问句)How beautifully she sang!How long did Tom do some reading?did they4. They had a sports meeting a few days ago.
否定句
一般疑问句
特殊疑问句They didn’t have a sports meeting
a few days ago.Did they have a sports meeting
a few days ago?Who had a sports meeting a few days ago?5. He didn’t eat anything for breakfast.(同义句)He ate nothing for breakfast.Difficulties in Part GHis brain was very poor.= He was not wise.
2. at all= in any way 根本,全然(表强调)
eg: I don’t like it at all.
There was nothing at all to eat.a loud roar n. 大的吼叫声
roar loudly v. 大声地吼叫
5. We can’t see him any more.
not anymore = no longer 不再,已不
eg: She doesn’t live here anymore.escape from = get away from
eg: The fish escaped from my hands.逃跑,逃脱4. run from = followDiscussion:
How did all the dinosaurs died? How many ideas do you have?True or false.The story is about the death of dinosaurs.
The scientists only have 2 ideas of the dinosaurs’
death.
The first idea is about food.
the second idea is about a big rock.TFFTFind the past tense of the verbs and write
the originate below them.Difficulties in Part C1. live on Earth = live on the earthEarth 地球 earth 陆地,地面,地上a long, long time ago
long time ago3. some…some… 一些……一些……Some walked on the land , some flew in the air
and some swam in lakes.walk on the land
fly in the air/ sky
swim in lakes4. maybe adv. maybe = perhaps 也许,可能 (表推测)
eg: Maybe he’ll come.
“Is that true?” “Maybe, I’m not sure.”注意区分maybe 和 may be.
maybe是一个词,他们不可分开。
may be里的may是情态动词,be是行为动词.
may be
eg: Tom may be a middle school student next year.
Sally may not win the game.5. become = come to be; grow to be
eg: They became good friends.
Tadpole ( 蝌蚪)becomes frog.
6. What’s your idea?Futher reading.
1. know about sth. 了解或知道某事物2. sometimes = at some times but not all the time 有时3.in the ground = in the earth4. No one knows.5. burybury-----buried (过去式)6. make a nest 筑巢