Grammar
Basic word order in English
0113
Basic sentence structure Sentences are made of clauses, and the simplest sentence has only one clause. In fact, sentences with only one clause are called
Grammar
Conjunctions: and, but, or, so, because
0298
and We use and for adding similar information or ideas; it means ‘too’ or ‘in addition’. My brother is a plumber, and my sister is a teacher. 
Grammar
A/an, the, no article – the use of articles in English
0242
What is an article? Basically, articles are either definite or indefinite. They combine to a noun to indicate the type of reference
Grammar
Adverbs of manner (slowly) – or adjectives (slow)?
0290
Adverbs of manner – use We use adverbs of manner after a verb to describe the verb. We use an adverb of manner to say how something happens or how we do something.
Grammar
Be going to – plans and predictions
0542
Future plan In addition to the simple future tense, we can talk about future events by using either: the present continuous, or to be (in the simple present) +
Grammar
‘Will’ and ‘shall’ – Future
081
Will is an auxiliary verb. This means that: we use will + infinitive: I‘ll be (or will be) at home next Saturday. 
Grammar
Superlative adjectives – the oldest, the most important, etc.
0217
Use of superlative adjectives We use superlative adjectives to compare one thing in a group with all of the other things in the group. We use “the” before
Grammar
Comparative adjectives – older than, more important than, etc.
093
Forming regular comparatives and superlatives We use comparatives to compare two things or two people. (e.g She is taller than her husband.
Grammar
Much, many, a lot of, a little, a few
097
A lot of vs. Lots of A lot of and lots of are used to express that there is a large quantity of something. We use a lot of in positive sentences
Grammar
Next to, under, between, in front of, behind, over, etc.
05.3k.
Prepositions of place Preposition of place Explanation Example in – inside I watch TV in the living-room. I live in New York. Look at the picture in the book.