Please help me solve the classification of conjunctions in English noun clauses, the more systematic

Guiding noun clauses.

The conjunctions can be divided into three categories:

Conjunctions (5): that, whether, if, as ifas though

None of the above acts as any component in the clause.

Conjunctive pronouns (9): what, whatever, whoever, whoever, whom, whomever, whose, which, whichever conjunctive adverbs (7): when, where, how, why, whenever, wherever, however

Noun clause conjunction:

1. Conjunctions: that, whether, if do not act as any component of the clause).

2. Conjunctive pronouns: what, whatever, whoever, whoever, whom, whose, which

3. Conjunctive adverbs: when, where, how, why

Usage: (1) that: that connects the noun clause of the slow search, only plays the role of joining, and does not make components in the clause. It can be omitted in the object clause.

2) If and whether: have the meaning of whether or not, indicating general doubt. The subject clause and the predicative clause can only use whether, and whether cannot be used, and whether is not used as a component in the clause, but only plays the role of connecting the slag. Scramble the beam calendar.

3) Interrogative pronouns who, whom, whose, what, which: these conjunctions not only play a connecting role, but also make components of nouns or pronouns in the clause, such as subject, predicate, object, and definite. Conjunctive pronouns are missing, and the clause is incomplete.

4) Interrogative adverbs when, where, why, how: These conjunctions not only play a connecting role, but also make adverbial statements in the clause to indicate the time, place, reason and way.

Guiding noun clauses.

The conjunctions can be divided into three categories:

Conjunctions (5): that (meaningless in itself.) Lead a single object clause.

That can often be omitted, but leads to the subject clause.

Predicative clauses, homonymous clauses.

that is usually not omitted).

whether, if (both indicate "whether" indicates the uncertainty of the content of the clause).

as ifas though (both mean "as if", "seem").

None of the above acts as any component in the clause.

Conjunctive pronouns (10): what whatever, who whoever, whom whomever, whose whosever, which whichever

Conjunctive adverbs (7): when whenever, where wherever, how however, why

Non-omittable conjunctions:

1.Conjunctions after prepositions.

2.The conjunctions of the leading subject clause and the copositional clause cannot be omitted.

we heard the news that our team had won.

3.Make conjunctions of components in clauses. Both whether and if mean no. However, only whether:

1.whether leads the subject clause and begins the clause.

eg:whether he can come to the party on time depends on the traffic.

2.Guiding predicative clauses.

eg:the question is whether we can get in touch with her.

3.The whether clause is used as a prepositional object.

eg:i am thinking about whether i should quit my present job.

It can be used with or not, but only whether can be used immediately after or not.

we didn't know whether or not she was ready.(Only whether can be used at this time).

i wonder whether/if the news is true or not.(In this case, both can be used).

5.It is directly followed by the verb infinitive.

Time. 6.When leading a copositional clause.

The conjunctions that guide noun clauses can be divided into three categories:

Conjunctions: that, whether , if (does not act as any component of the clause).

Concatenating pronouns: what, whatever, who, whoever, whom, whose, which

Conjunctive adverbs: when, where, how, why

The conjunctions of noun clauses are as follows:

1. Conjunctions: that, whether, if do not act as any component of the clause).

2. Conjunctive pronouns: what, whatever, whoever, whoever, whom, whose, which

3. Conjunctive adverbs: when, where, how, why

Usage: (1) that: that connects the noun clause, only plays the role of joining, and does not make the component redundant in the clause. It can be omitted in the object clause.

2) If and whether: have the meaning of whether or not, indicating general doubt. The subject clause and the predicative clause can only use whether, and cannot use and whether, nor do they make components in the clause, but only play a connecting role.

3) Interrogative pronouns who, whom, whose, what, which: these conjunctions not only play a connecting role, but also make components of nouns or pronouns in the clause, such as subject, predicate, object, and definite. Lack of concatenating bright prepronouns, incomplete clauses.

4) Interrogative adverbs when, where, why, how: These conjunctions not only play a connecting role, but also use Jing Changqing as an adverbial in the clause to indicate the time, place, reason and way.