1. Leave up to means to leave... to...;
2. Because Britain had many colonies around the world in the past, in modern times, English is used in many countries with Regions are all common languages ??or one of the official languages;
3. English phonology refers to the study of the English phonology (that is, the sound system). As with all languages, whether historical or not, the pronunciation of spoken English varies from dialect to dialect.
Extended information:
English grammar is a series of language rules that are systematically summarized and summarized after studying the English language. The essence of English grammar lies in mastering the use of language.
Nouns are generally divided into proper nouns (proper nouns) and common nouns (common nouns). Proper nouns are specific names for individual people, things, places, groups, institutions, etc. The first letter is usually capitalized.
The passive voice in English is more commonly used than in Chinese. This issue is often involved in many textbooks, exams and even practical applications. Generally speaking, when emphasizing the recipient of the action without naming the executor or the ambiguous executor, the passive tense is often used. It should be noted that many places are different from Chinese.
Baidu Encyclopedia-English
Baidu Encyclopedia-English Grammar