Syntax
Parts of speech
Forms of tenses
Modal verbs
Conditionals
100

A sentence which consists of two or more independent clauses coordinated with each other.

Compound sentence

100

a part of speech that expresses the substance

a noun

100

Customery,repeated actions

Simple present tense

100

General ability

Can

100

Facts are generally true

Zero conditional

200

A part of a sentence which has a subject and a predicate of its own.

A clause

200

A word which denotes a quality, shape, size or appearance of a person or a thing.

Adjective

200

Intentions and future plans

Simple Future tense

200

Ask for permission

May

200

Hypothetical or unlikely situations

Second conditionals

300

A sentence consists of a principal and one or more subordinate clause.

A complex sentence

300

A part of speech which indicates the number or order of people and things.

The numeral 

300

Actions that are happening now

Present continuous tense

300

Obligation

Must

300

A possible situation in future

First conditionals

400

A clause that performs the function of an adverbial modifire.

An adverbial clause

400

A part of speech which denotes objects without naming them.

Pronoun

400

Denotes a completed action connected with the present.

Present perfect action

400

Advice or suggestion

Should

400

Imaginary situation that didnt happen.

Third conditionals

500

A clause introduced by the conjunctions where and wherever.

Adverbial clause of place

500

This, thatm such, the same

demonstartive pronoun

500

An action in progress, which starts in the past and still goes on.

The present perfect continuous

500

Necessity

Have to

500

If it rains, I will cancell the trip

First conditionals