Use - able to / unable to / can / could

Use -  able to / unable to / can / could

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can    =  am /is /are able to. 
       could = was /were able to        

 can not = am/ is/are not able to.                                                                                 am / is / are unable to. 

could not = was/were not able to. 

                       was /were unable to.
    
       (Remove =   Use. )
        ( Use     =   Remove.)
( बरोबर चिन्हांच्या अगोदरचे शब्द काढा व नंतरचे वापरा. नंतरचे काढल्यास अगोदरचे वापरा.)

Examples.

1) He can go to school.
Ans. - He is able to go to school.
 
 2) They could give answers.
Ans.-They were able to give answers.
 
3) People could not remain silent.                         Ans.-People were unable to ( were not able to) remain silent.

4) Ram is unable to attend the meeting.
Ans.-  Ram can not attend the meeting.

Can (modal auxiliary) shows ability.
( Can  येथे क्षमता दर्शविते)

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