I found English grammar______and difficult. A: to be dull B: being dull C: dull D: be dull

There are four types of grammar,type-0, type-1, type-2, type-3. The type 1 grammar is (). A: Phrasal grammar B: Regular grammar C: Context-related grammar D: Context-free grammar

Which type of grammar tends to teach you how the grammar is used by the people rather than how it should be used? A: descriptive grammar B: prescriptive grammar C: traditional grammar D: new grammar

Grammar can be divided into four types: Type 0, type 1, type 2 and type 3. The type 3 grammar is ( ). A: Phrasal grammar B: Regular grammar C: Context-sensitive grammar D: Context-free grammar

Chomsky divides grammar into four types, namely type 0, type 1, type 2, and type 3. The type 3 grammar is( )。 A: Unrestricted<br/>grammar B: Regular<br/>grammar C: Context-sensitive grammar D: Context-free grammar

Among<br/>the four formal language grammars, type-1 grammar is also called ()<br/>grammar. A: Phrase structure grammar B: Context-free grammar C: Context-related grammar D: Regular grammar

How to learn grammar and avoid grammar mistakes in your writing?

Generally<br/>speaking, grammar can be divided into theoretical grammar and<br/>pedagogical grammar. Besides, there seems to be a shift from<br/>prescriptive grammar to descriptive grammar in terms of teaching<br/>grammar. ( <br/>)

ggplot2中的前缀gg表示什么？ A: grammar of group B: graphic of group C: graphic of grammar D: grammar of graphic

Which of the following sentences grammar are right? ( ) Which of the following sentences grammar are right? ( )