The so-called voiced consonant refers to a voiced consonant. If it is followed by a voiced consonant, the voiced consonant in front should be pronounced as a relatively voiced consonant. For example, the verb сдатъ was originally? с is a clear consonant, but it is followed by a voiced consonant? д, it's about to read? Pronunciation of з? здатъ? . Another noun? So it was экзамен? к is a voiced consonant, but it is followed by a voiced consonant? з, it's about to read? The pronunciation of г is гзамен.

The so-called unstressed vowel change refers to a vowel. If there is no stress, you should read weakly. Like pronouns? она, because? No pressure. How do you read it? а, that is, read it? ана。

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