After reading this lesson, I have learnt the parts of speech, this mean each word in a sentence can be further classified, according to its purpose and the meaning it adds. A simple sentence normally consists of an article + noun + verb + adverb. Moreover, word is classified as an adjective, adverb, gerund, pronoun, preposition/conjunction.
A noun names people,animals, places, things ...There are some main types of noun such as common noun (teacher,person... without capital letter); proper noun (Italy, Spanish...with capital letter); compound noun ( post office, car park, bus driver...). We have plural nouns made by add "s" or "es" according to certain rulers (cars, dishes..),countable noun as its name already shown that noun can be counted (pen, book, hat...) and uncountable noun which noun can NOT be counted (traffic, coffee,...).
We usually describe noun such as people and thing with an adjective like tall, big, small, smart....A basic rule to order many adjective is size->age->colour->material ->noun.we have comparative (better, harder..) and superlative (most beautiful, best...) form of adjective with regular and a few irregular comparative, superlative forms.
There are two kinds of articles : definite (the) and indefinite (a/an) with specific rules to use.
About verbs, a verb refers to actions or state. For example: go, watch , play ... are action verbs; appear, smell, feel ... are state verbs.All verbs are either transitive or intransitive . All verbs have a base form. We add "to" before a verb to inform the infinitive of a verb in order to refer the action as a whole.English verbs have four principal forms : base form,past simple,past participle,present participle. We have regular and irregular verbs . Besides, we have auxiliary verb to help form a tense or an expression , but do not carry the main meaning. There are only 3 auxiliary verbs: do, have and be.
About adverbs,An adverb adds more detail information for a verb, normally be placed after the object of a transitive verb. There are five main types of adverbs : manner, place, time, degree, frequency and other notable types:comment/attitude, linking, viewpoint,adding/limiting.
About Gerunds, a gerund is the - ing form of verb used as a noun.
About pronouns,Pronouns are words used instead/in place of more precise nouns or noun phrases. Some types of pronouns are personal , possessive , reflexive ,relative
Last but not least,They are prepositions/conjunctions.Prepositions show the relationship between a noun or a pronoun and some other words in the sentence. There are 3 main types of prepositions : time/date (at, on, by...); movement (from, to , in, on..) ; place/position (in,at, on..) and some common prepositions that dont really fit to any above categories (off,with). Conjunctions join words or groups in a sentence (and, but, or, yet..)