Ask what is a main clause and what is a subordinate clause, and what is the difference between the t

1. The six relations between the main clause and the subordinate clause: causal relationship, example relationship, contrast relationship, concession relationship, hypothetical relationship, and definition relationship.

2. In English, a sentence that can be stored independently is called a cong elimination as a main sentence, and a sentence that is only used as a component of the sentence and cannot exist independently is called a subordinate clause. The clause is guided by a related word and a subordinate conjunction, and the structure of the clause is a related word subordinate conjunction + subject + predicate + other components. The main clause is the subject + predicate + other components, so, whether the clause is in front or after, the connecting word is always with the clause.

The main sentence is the main stem of the whole sentence that guides the whole sentence. A clause modifies the main clause. Clauses are divided into noun clauses (subject clauses, object clauses, predicative clauses, copositional clauses), definite clauses, and adverbial clauses.

1.Emphasis on the structure of declarative sentences

it is was + the emphasized part (usually the subject, object, or adverbial) + that who (when the subject is emphasized and the subject refers to the person) + the other part.

Example: it was yesterday that he met li ping

2.Emphasis on the structure of a general interrogative sentence

Same as above, just put is was in front of it.

Example: was it yesterday that he met li ping?

3.Emphasis on the structure of special interrogative sentences

The emphasized part (usually an interrogative pronoun or interrogative adverb) + is was + it + that who + other parts?

Example: when and where was it that you were born?

Sentence pattern of emphasis

a.The sentence pattern is: it is not until+emphasis+that+other.

Ordinary sentence: He didn't go to bed until till his wife came back

emphasis: it was not until his wife came back that he went to bed

b.Note: This sentence pattern only uses until, not till.

But if the sentence structure is not emphasized, till and until can be used universally; Because in the sentence pattern it is was not....It's already a negative sentence, and the subordinate clause after that should use an affirmative sentence, and don't use a negative sentence anymore.

5.Emphasis on predicate verbs

is/was...that...The structure cannot emphasize the predicate, if the predicate needs to be emphasized, use the auxiliary verb do do or did

do sit down.Please be seated.

do be careful when you cross the street.When crossing the street, be careful!

b.Note: This emphasis only uses do does and did, and there is no other form; The past tense is used did, and the predicate verb that follows it is in the original form.

In the grammar of modern Chinese, the clause is not used as a professional term, and in the grammar of modern English, the clause refers to the compound sentence that cannot be formed into a sentence independently, but has a subject part and a predicate part, and is guided by the introductory words such as that, who, whom, when and why.

In the transformational generation grammar, the sentence containing the constituent sentence coincides with the main clause in the traditional grammar, in the object clause, the if is followed by the object-slave, and the preceded is the main clause.