Although, but, howeverThey have same function to indicate contrast however, they are use a differentlyBut :is less formal than although and however it is used between two sentences it comments and is normally preceded by a comaAlthough aunque :is more typical of careful or formal speech or writing the word although can be at the beginning or between the two clousesHowever sin embargo :is more common in formal speech and in writing it introduces or complete a contrasting sentence it is always preceded and followed by a punctuation -------------------------------------------------------------------------------Referring to repeated actions referring to one actionSeverak times a week: varias veces a la semanaAt the weekend: alfin de semanaA few weeks ago unas semanas atrasTwicea week dos veces a la semanaOnce una vez In the last few weeks en la ultima semana Las year : el ao pasado A few haves a day unas pocas horas al diaVocabulary-so si esque o entoncesBut peroHowever sin embargoAlthought aunque Beacause por queBeside ademsProvided that siempre que As long as mientras queEmbarrased avergonzadoAgre de acuerdo Disagree en desacuerdoGarlic ajo Breath alientoHang up /hung up corta el telfono/corte el telfonoDaring osadoPick up recogerSleep over pijamadaCrush enamoradiAnyone alguein cualquiera

Singular plural-----------------------------singular----------------------------BacteriumCorpusCriterionCurriculumDatumMediumMemorndumPhenomenonStratum----------------------------Plural-----------------------BacteriaCorporaCriteriaCurriculaDataMediaMemorandaPhenomenastratadrought:Sequiaflood:inundacion