![To be able to' is used to express ability in all tenses and it also substitutes 'can' in all the forms in which it is not possible. Examples: We weren't. - ppt To be able to' is used to express ability in all tenses and it also substitutes 'can' in all the forms in which it is not possible. Examples: We weren't. - ppt](https://slideplayer.com/slide/13222172/79/images/2/%E2%80%98Could%E2%80%99+or+%E2%80%98be+able+to%E2%80%99+I+could+speak+Spanish+so+I+was+able+to+understand+and+answer+all+his+questions.jpg)
To be able to' is used to express ability in all tenses and it also substitutes 'can' in all the forms in which it is not possible. Examples: We weren't. - ppt
![CAN / BE ABLE TO. 1. ABILITY He can speak two foreign languages fluently. He can speak two foreign languages fluently. He is able to speak two foreign. - ppt download CAN / BE ABLE TO. 1. ABILITY He can speak two foreign languages fluently. He can speak two foreign languages fluently. He is able to speak two foreign. - ppt download](https://images.slideplayer.com/8/2287611/slides/slide_12.jpg)
CAN / BE ABLE TO. 1. ABILITY He can speak two foreign languages fluently. He can speak two foreign languages fluently. He is able to speak two foreign. - ppt download
![Can, could, be able to Look at these four sentences. Why don't we use a form of can in the last two? Twenty years after Mr Moore's first successful climb. - ppt Can, could, be able to Look at these four sentences. Why don't we use a form of can in the last two? Twenty years after Mr Moore's first successful climb. - ppt](https://slideplayer.com/2287604/8/images/slide_1.jpg)
Can, could, be able to Look at these four sentences. Why don't we use a form of can in the last two? Twenty years after Mr Moore's first successful climb. - ppt
![ABILITY. CAN and CAN'T We use can to say that someone has an ability (Natasha can play the piano) or an opportunity (She can go to the music room). - ppt ABILITY. CAN and CAN'T We use can to say that someone has an ability (Natasha can play the piano) or an opportunity (She can go to the music room). - ppt](https://images.slideplayer.com/13/3889699/slides/slide_3.jpg)
ABILITY. CAN and CAN'T We use can to say that someone has an ability (Natasha can play the piano) or an opportunity (She can go to the music room). - ppt
![MODALS. Form Modal verbs are followed by infinitives: I can swim You ought to learn how to swim Modal verbs can also be followed by Have + Third form. - ppt download MODALS. Form Modal verbs are followed by infinitives: I can swim You ought to learn how to swim Modal verbs can also be followed by Have + Third form. - ppt download](https://images.slideplayer.com/35/10365919/slides/slide_11.jpg)