Is dental caries a disease of the calcified tissues of the teeth caused by the action of micro-organisms on fermentable carbohydrates? Общий
It is characterized by demineralization of the mineral portion of enamel and dentine followed by disintegration of their organic material,isn’t it? Разделительный
Does caries present symptomatically at a relatively early or late stage? Альтернативный
What produces further changes in the periapical tissues? Вопрос к подлежащему
When can the disease be arrested ? Специальный
Is dental caries a disease of the calcified tissues of the teeth caused by the action of micro-organisms on fermentable carbohydrates? Общий
It is characterized by demineralization of the mineral portion of enamel and dentine followed by disintegration of their organic material,isn’t it? Разделительный
Does caries present symptomatically at a relatively early or late stage? Альтернативный
What produces further changes in the periapical tissues? Вопрос к подлежащему
When can the disease be arrested ? Специальный
Специальный вопрос: вопросительное слово+ did +подлежащее +смысловой глагол ( What did you do last weekend? )
Отрицательное предложение : подлежащее+ didn't +глагол ( инфинитив) .
My sister didn't buy a new smartphone. Утвердительное предложение : подлежащее+глагол в 2 форме для неправильных, глагол для правильных окончание -ed. ( Sally wrote a letter to Mike last Sunday. Wrote 2 форма глагола write. My sister played the piano yesterday. Played неправильный глагол, следовательно, прибавляется окончание - ed.