The Imperative is used to express a request or an order.
There are two Imperative forms in Russian, and the choice of a particular form depends on whom you are addressing:
Imperative forms.
This is how the Imperative forms are constructed:
Please, remember!
If the verb stem ends in a vowel ("a", "о", "у", "и", etc.), then the suffix "-Й-" is added to the stem. If the stem ends in a consonant ("б","в", "г", "д", "ж", etc.), then the suffix "-И-" is added.
Verb: Past Tense
The Past tense is used to describe any action that took place in the past.
"Этот молодой человек раньше не говорил по-русски, а теперь говорит". - "Previously, this young man did not speak Russian but now he does."
"Маша уже говорила тебе, где можно купить сувениры." - "Masha told you before where to buy souvenirs."
To form the Past Tense verbal forms: first, drop the verb Infinitive ending and add to the verb stem the Past tense suffix "-л", then follow the suffix with the ending "-а" for feminine nouns, with the ending "-о" for neuter nouns, and the ending "-и" for plural nouns.
Please, remember! The Past tense verbal form agrees with the noun in gender and number.
Ordinal Numerals.
The first place!
Just as adjectives, ordinal numerals have to agree with nouns in gender, number and case.
Complex sentence with the words "ПОЭТОМУ" (that's why) и "ПОТОМУ ЧТО" (because)