Verb Study
All Verbs
Verb Quiz
concentrate
concentrate, concentrated, concentrated
To focus attention or effort
專注;集中
Base Form
concentrate
Simple Past
concentrated
Past Participle
concentrated
3rd Person Singular
concentrates
-ing Form
concentrating
Categories
Type 2: reg
Type 5: a-b-b
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1
2026-07-15
G
G
B
B
All Verbs
Verb Quiz
Verbs starting with "con"
18
concentrate
conclude
condemn
conduct
confirm
confuse
congratulate
conjugate
connect
consider
consist
contact
contain
continue
contribute
control
convict
convince
Verbs ending with "ate"
50
accumulate
activate
administrate
anticipate
appreciate
calculate
celebrate
collaborate
collate
communicate
concentrate
congratulate
conjugate
cooperate
create
cultivate
deactivate
decorate
dedicate
demonstrate
devastate
dominate
donate
educate
elevate
evacuate
frustrate
generate
graduate
grate
hate
humiliate
illuminate
imitate
indicate
initiate
integrate
investigate
lubricate
manipulate
motivate
navigate
negotiate
operate
participate
penetrate
replicate
separate
sophisticate
speculate
Verbs
10
compile
complain
complete
compress
concentrate
conclude
condemn
conduct
confirm
confuse
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