Правописание ча, ща, чу, щу, жи, ши

Звуки [ч’] и [щ’] — всегда мягкие, поэтому после них не нужно писать мягкие звуки. Именно поэтому в орфограммах ча, ща, чу, щу после них пишутся твердые гласные звуки, а не мягкие.

История орфограмм жи и ши уходит в далекое время, когда в Древней Руси у букв Жж и Шш были мягкие парные звуки. Однако мягкие звуки исчезли, а привычка писать мягкий гласный [и] осталась до сих пор.

Тренажеры по теме

• правописание слов с безударной гласной,
• правописание чк, чн, нч, чт, нщ, щн.

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