Everyday is an adjective which we use to descrabe something which is normal and not exciting in any way. 

This isn't an everyday occurrence.

An idiоm is a grоup of wоrds in a fixеd оrdеr thаt hаvе а pаrticulаr mеаning thаt is diffеrеnt frоm the mеаnings of еаch wоrd оn its оwn.
Knоwlеdgе оf idiоms is аn impоrtаnt pаrt оf cоmprеhеnsiоn оf the English lаnguаgе.

Texting language, txtslang, SMS language or textese is a term for the acronyms and slang commonly used with mobile phone text messaging, but sometimes used with other Internet-based communication.
SMS language is used in about 20% of messages in the UK and the US. 
The primary motivation for the creation and use of SMS language was to convey a comprehensible message using the fewest number of characters possible. This was due to the way in which telecommunication companies limited the number of characters per SMS, and also charged the user per SMS sent. To keep costs down, users had to find a way of being concise while still getting their message across. Further typing on a phone is normally slower than with a keyboard, and capitalization is even slower. As a result, punctuation, grammar, and capitalization are largely ignored.

Nominal Relative Clauses
In nominal relative clauses, the relative pronoun acts like a NOUN + RELATIVE PRONOUN TOGETHER.
I need a bed and IKEA had exactly what I was looking for. (=exactly the bed which I was looking for)

Being able to compare and contrast ideas, people, and things is an essential part of English conversation as well as writing and speaking parts of international English exams. 

Nouns are one of the basic parts of speech and they refer to a person, animal, place, thing, phenomenon, substance, quality, or idea.
Nouns answer the questions "What is it?" and "Who is it?"

You will certainly be asked questions that invite you to say whether you agree or disagree with an issue in the Speaking part of international English exam.

The idea of a word family is important for a systematic approach to vocabulary studying.
A word family is a group of related words that are formed from the same word. 
A word family consists of a base word and its inflected forms and derivations.

Comparing two texts

Both texts present similar views

The two texts illustrate different aspects

While text A suggest..., text B advocates...

In contrast with this, text B...

Text B, on the other hand, argues against...

Slаng еxists in еvеry lаnguаgе; it is pаrt оf thе nаturаl еvоlutiоn оf a lаnguаgе. Slаng is а highly infоrmаl lаnguаgе аnd in mаny cаsеs, slаng is spеcific tо cеrtain gеоgrаphicаl lоcаtiоns, grоups оf pеоplе оr spеcific industriеs. Its infоrmаl nаturе mаkеs it аccеptаble fоr cоnvеrsаtiоns аmоng friеnds but inаpprоpriаtе fоr fоrmаl writing.