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Explanations
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Page 20
Explanations
have to, must, should – obligation, prohibition, necessity, advice
Can, could, be able to – ability and possibility
Another, other, others, the other, the others
A(n), the, no article
Comparative and superlative adjectives and adverbs
Present perfect simple and present perfect continuous
Past simple or present perfect?
A/an, the, no article – the use of articles in English
Adverbs of manner (slowly) – or adjectives (slow)?
Be going to – future plans and predictions
Superlative adjectives – the oldest, the most important, etc.
Comparative adjectives – older than, more important than, etc.
Much, many, a lot of, a little, a few
There is, there are – there was, there were
A, some, any – countable and uncountable nouns
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