Grammar

The word 'both' modifies the noun phrase 'these books,' telling which books are wanted. When placed before a noun, 'both' functions as an adjective/determiner specifying quantity. It's not the main noun or performing an action.

The word 'Both' stands alone as the subject of the sentence, referring to two previously mentioned people or things. When 'both' functions independently as a subject or object (without modifying a following noun), it's a pronoun.

The word 'better' modifies the verb 'sings' by describing how the action is performed. Adverbs modify verbs, and 'better' tells the manner of singing. When comparing how actions are done, the comparative form 'better' is an adverb.

The word 'better' modifies the noun 'doctor,' describing what kind of doctor he is. Adjectives modify nouns. When comparing qualities of people or things, 'better' functions as an adjective modifying the noun.

The word 'Both' works with 'and' to connect two noun phrases ('Joseph' and 'his wife'). This makes it a coordinating conjunction. Conjunctions join words, phrases, or clauses. Here, 'both...and' is a correlative conjunction structure.

The word 'but' modifies 'try' by limiting it to mean 'only' or 'just.' Here, 'but' functions as an adverb meaning 'only' or 'no more than.' The sentence means 'We can only try' or 'We have no option except to try.'

The word 'but' connects two contrasting ideas: 'she is intelligent' and 'her brother is not.' This coordinating function makes 'but' a conjunction. Conjunctions join clauses or show contrast between ideas.

The word 'both' modifies 'want' as a subject pronoun referring to the speakers. When 'both' is used with a verb and no following noun, it functions as a pronoun meaning 'the two of us.' It replaces the specific nouns it refers to.

The word 'Both' stands alone as the subject referring to two people/things. In 'Both of them,' 'Both' functions as a pronoun meaning 'the two.' The structure 'Both of [pronoun]' is a standard pronoun construction.

In this sentence, 'but' functions as a preposition meaning 'except.' When used with a personal pronoun after it, the preposition 'but' takes the objective case, so 'he' is actually incorrect (it should be 'him'), but the part of speech identification is correct. The word connects the subject 'No one' with the pronoun 'he' and indicates exclusion.

In 'I have no intention but to help you,' the word 'but' functions as a conjunction that can be understood as 'that not.' It introduces the subordinate clause 'to help you' and connects it to the main clause. This is a specialized usage of 'but' as a conjunction meaning 'except that.'

In 'go and lie down,' the word 'down' is an adverb that modifies the verb 'lie.' It indicates direction or position (moving to a lower position or horizontal state). Adverbs often modify verbs to show how, where, or when an action happens.

In 'She sat down,' the word 'down' is an adverb modifying the verb 'sat.' It indicates the direction of the action (moving to a seated position on the ground or a lower surface). This is a common use of directional adverbs with verbs of motion or position.

In 'The price of rice has gone down,' the word 'down' is an adverb modifying the verb phrase 'has gone.' It indicates a decrease in the price. Here, 'down' is used in an abstract sense to mean 'to a lower level' rather than physical direction.

In 'Take down what I say,' 'down' is part of the phrasal verb 'take down' and functions as an adverb. The phrase means to write down or record what someone says. In phrasal verbs, the particle (here, 'down') modifies the main verb to create a specific meaning.