"have lunch" or "have a lunch"

I think “have lunch” is used to mean eating food (solid food or fluid food), and “have a lunch” is used to mean having an eating occasion. "havelunch"or"havealunch" EnglishasaSecondLanguage EnglishVocabulary,GrammarandIdioms Magic_Dragon October15,2016,12:12am #1 I’dappreciateitifsomeonewouldanswermyquestion.Thanksinadvance. What’sthedifferencebetween“havelunch”and“havealunch”? Ithink“havelunch”isusedtomeaneatingfood(solidfoodorfluidfood),and“havealunch”isusedtomeanhavinganeatingoccasion.AmIright? 2Likes Anglophile October15,2016,6:12am #2 Yes,youareratherright.Weusuallyuse‘lunch’withoutanyarticlewhenwemeanitasthenormalfoodweeat.However,whenwewanttoqualifyit,wemaysay:Ihadasumptuouslunchtoday.Thelunchwasverydelicious. 2Likes Magic_Dragon October15,2016,7:03am #3 ThankyouAnglophile. CanIsay“havelunch”isright,and“haveasumptuouslunch”isalsoright,but“havealunch”(withoutanymodifier)iswrongintermsofgrammar? 1Like Anglophile October15,2016,7:18am #4 I’dsayyes.ButinInEIfindsentenceslike‘Haveyourlunch’,’Ihavehadmydinner’etcalsoperfectlyacceptable. 2Likes Alan October15,2016,7:21am #5 Fc havealunch Youcouldsaythatwithoutanadjectiveprecedingtheword‘lunch’butyouwouldhavetoindicatethatthislunchwasaparticularoneandwouldneedtodefineitasin- Wehadalunchtogethertocelebratehisrecentexamresults.Wealwayshavelunchatthisrestaurantonherbirthday. 1Like Magic_Dragon October16,2016,2:15am #6 ThankyouAlan.AndthankyouAnglophile. 1Like Anglophile October16,2016,6:31am #7 You’rewelcome! 1Like Sweetpumpkin February7,2019,3:34pm #8 Ijustfoundthisthreadsearching“alunch”. Then,“let’sbreakforanearlylunchat11.”isalsothelunchisparticularonebecauseitwillhappenearly…Becauseoftheadjective“early”specifies“lunch”here,thenanarticleseemneededhere.AmIright?Pleaseletmeknow! 2Likes Torsten February9,2019,8:53pm #9 That’sright.Youcanspecifythenounluchwithadjectivessuchasanearlylunch,agreatlunch,alazylunch,etc.Sincethesedescribespecificmealsyouneedthearticle‘a’or‘an’. 2Likes Mona_Rmzi February10,2019,4:53am #10 Hello,SirAlan.Youranswersarealwayswonderful.Icanunderstandthemeasily.Thankyouverymuch.Ilearnalotfromyou. 1Like xclose