动词可能是句子中最重要得部分。 动词或动词短语是断言句子得主语，并表达动作、事件或状态。 动词或复合动词是句子谓语得关键成分。
take in: absorb
We tried to take in the new information.
take out: invite to a restaurant
May I take you out for supper?
take over: assume control
They will take over at the beginning of June.
talk over: discuss
Let us talk it over before we decide.
tear up: destroy by tearing
She tore up the letter.
think over: consider
I need some time to think it over.
think up: invent
What will they think up next?
track down: search for and find
We finally tracked him down at the bookstore.
trade in: give as part payment
Why don't you trade in your old vacuum cleaner for a new one?
try on: test clothes by putting them on
I tried on the new suit, but it didn't fit me.
try out: test by using
Would you like to try out my fountain pen?
turn away: refuse admission
The event was so popular that many people had to be turned away.
turn back: reverse direction
Every fall the clocks must be turned back by one hour.
turn off: deactivate by using a switch
I turned off the radio.
turn on: activate by using a switch
Please turn on the light.
water down: dilute
The soup has been watered down.
wear out: gradually destroy by wearing or using
My jacket is wearing out, although it is only a year old.
write down: make a note
I wrote down the instructions.
write off: cancel, regard as
They were forced to write off several irretrievable debts.
write up: compose in writing
I used my notes to write up the report.
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