The Present Perfect continuous is formed by the present tense of have + been + the ing form:
They have been attending a computing course since the beginning of the school year.
-When we want to emphasize an action or situation in progress.
Ex: We have been playing this computer game for about an hour.
-With temporary actions and situations
Ex: I have been reading while you have been watching TV.
Ex: Look at them. They have been playing tennis since midday.
Ex: How long have your students been studying for the test?
-It is used before singular and plural nouns.
-We use the when we talk about a particular person or thing.
-we use the with superlatives
-we use the with parts of the day.
-we use the with words which describe geographical position and place.
-we use a before a word beginning with a consonant, or a vowel sounded like a consonant.
-we use an before words beginning with a vowel or words beginning with a mute h.
-the indefinite article a or an is used before a singular countable noun, with a noun complement. This includes names of professions, numerical expressions, expressions of price.
-We also omit the article before uncountable nouns in their general sense
-Zero article is used before proper names and titles
-séculos (Shakespeare lived in the 16th century)
-meses (we’ew going to Paris in June)
-anos (He started working in this firm in 1990)
-estações do ano (He always spends two weeks with his granparents in the summer)
-partes do dia (Peter always goes to the gym in the evening)
-um periodo de tempo no futuro (I’ll finish this project in two weeks)
-dias da semana (We usually go to the cinema on Sundays)
-partes de dias especificos (Jacket goes to the dentist on Tuesday morning)
-datas (What are you going to do on April 27th?)
-dias (What are you going to do on Thursday
- ocasiões especiais (we usually go to a party on New year’s eve)
-horas (I always get up at 7:30 am)
-refeições (I usually eat soup at dinner)
-festas/celebrações (Shezan never works at ramadan)
-um espaço fechado e delimitado(The keys are in my purse)
-cidades, estados, países e continentes (Danny has been living in Italy since 1997)
-posição relativa de algo (The sofa is in the middle of the room)
-church,hospital,school (Mike is in hospital)
-superficies verticais/horizontais (Your watch is on the table)
-direções right/left (They live on the left side of the town)
-máquinas (Paul spends hours on his computer)
-side, coast, border, page, form, wall, ground, floor, island (I live in Portugal border)
-local em particular (Sign your name at the top of the page)
-local como ponto referência (We meet at the train station)
-atividades num determinado edificio (My dad works at the chemist’s)
-moradas (Tony lives at 52, East street)
-edificios/locais públicos onde decorrem atividades (I was at the cinema)
-home,school, work(I’m staying at home tonight)
-verbos de perceção (feel,observe,see,…)
-depois de preposições
Não utilizamos para:
-descrever pessoas ou objetos