Stylistics of introductory units

Introductory units express the speaker’s attitude to the content being stated and are not parts of the sentence. They give meanings such as confidence (albatta “of course”, shubhasiz “undoubtedly”), doubt-supposition (ehtimol “probably”, balki “perhaps”, shekilli “it seems”), feeling (afsuski “unfortunately”, xayriyat “fortunately”), whose opinion it is (menimcha “in my opinion”, aytishlaricha “according to what is said”), order and conclusion (birinchidan “firstly”, xullas “in short”). By form they can be an introductory word (shekilli “it seems”), an introductory phrase (to‘g‘risini aytganda “to tell the truth”, bir so‘z bilan aytganda “in a word”) or an introductory sentence (Esimda bo‘lsa “If I remember rightly”, Sizga aytsam “Let me tell you”). Introductory units are separated from the main sentence by commas; an introductory sentence is sometimes separated by brackets or a dash. They increase the expressiveness and effect of speech and are frequent in the colloquial, artistic and publicistic styles, while in the scientific and official styles mainly units of order and conclusion are used.