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When to use has and when to use have?
Has and have are two forms of the infinitive to have Has is used for he, she and it, and generally speaking third person singular. (eg Richard has a lot of friends) Have is used for all other case...
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When to use has and when to use had?
Has is used in the present: Tom has a soccer tournament today. Had is for the past: Lauren had an ice cream cone three hours ago.
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When to use 'that' and when to use 'which'?
Use "that" in a restrictive clause, to specify a particular thing you are talking about, and use "which" in a nonrestrictive clause, to provide additional information about something. The "which"...
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When to use no and when to use not?
'Not' is an adverb, and is used to make a verb negative. (not + verb) Example with the verb 'to like': Positive: I (do) like chocolate. Negative: I do not like chocolate. Example with the verb 'to...