to have a good grasp of sth meaning, to have a good grasp of sth definition | English Cobuild dictionary

Collins
have         

[

1]  
  ( has    3rd person present)   ( having    present participle)   ( had    past tense & past participle  )   (AUXILIARY VERB USES)  
In spoken English, forms of have    are often shortened, for example I have is shortened to I've and has not is shortened to hasn't.         
1       aux   You use the forms have    and has with a past participle to form the present perfect tense of verbs.      
Alex has already gone...      AUX -ed  
My term hasn't finished yet...      AUX -ed  
What have you found so far?...      AUX -ed  
Frankie hasn't been feeling well for a long time.      AUX been -ing  
2       aux   You use the form had with a past participle to form the past perfect tense of verbs.  
When I met her, she had just returned from a job interview...      AUX -ed  
3       aux   Have is used in question tags.  
You haven't sent her away, have you?...      cl AUX n  
4       aux   You use have    when you are confirming or contradicting a statement containing `have', `has', or `had', or answering a question.      
`Have you been to York before?'—`Yes we have.'      AUX  
5       aux   The form having with a past participle can be used to introduce a clause in which you mention an action which had already happened before another action began.  
He arrived in San Francisco, having left New Jersey on January 19th...      AUX -ed  
Translation English Cobuild Collins Dictionary  
See also:

have, have, have, have a fit

Collaborative Dictionary     English Cobuild
exp.
have a great time; enjoy oneself
adj.
to be gutsy means to have guts
to be gutsy: avoir du cran
exp.
be in a good shape
exp.
yell at someone; attack someone verbally or physically
[Slang];[UK]
v.
continue to have something; keep something
exp.
mind about smth./smb.; be disturbed by smth./smb.
E.g.: She has a beef with people smoking next to her.
adj.
large enough to have an effect or be important
[US] The series has aroused considerable interest.
exp.
generally, an endearment expression used to describe someone who, contrary to the appearances, proves to have strength, determination
n.
a woman, generally in her twenties, who shows she is having a good time with her friends by shooting "WOO" ("HOO") usually in unison with other woo girls
[Fam.]
n.
economic player that both produces and consumes a good or service
portmanteau word: producer + consumer. Linked to mass costumisation
exp.
I have no idea; I don't have a clue
[Informal] E.g.: Why was she upset? - Beats me!
exp.
have a powerful impact on someone; impress; generate an emotion (positive, but also negative)
it can be used to describe a feeling of fear or a positive emotion; e.g.: "This violin music gives me the chills" or "Being all alone in that old house after dark...it gave me the chills."
n.
to release sth that is tied up
adj.
having good taste
exp.
to take OR turn OR bring something down a notch means to decrease its intensity
v.
used for saying that you think someone is spending too much money on things they do not need
adj.
all right; good, OK, satisfactory
informal
exp.
have everything together; have all things settled/organized
E.g.: Just when I had got all my ducks in a row and I was ready to go, I received a call and had to cancel my trip.
exp.
he is a very good seller
v.
to bump into sth
exp.
be tone-deaf
comes from a pun related to Van Gogh (a painter) cutting off his left ear and the expression "have an ear for music" = be particularly good at learning music
exp.
disappear ; be absent; leave (temporary or for good)
E.g. "Now, that the parents are out of the picture, we can throw a party". (meaning=Now, that the parents left, that they are no longer here) "James is out of the picture, him and Mary split up"
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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"
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