Is there a difference between affirmative sentences and declarative sentences? Refers to English.

Affirmative sentences and declarative sentences are the relationship between inclusion and inclusion, and declarative sentences include affirmative sentences and negative sentences.

A statement states a fact or the speaker's point of view. Declarative sentences use a period at the end of the sentence and read in a falling tone. In short: affirmative sentences must be declarative sentences, and declarative sentences are not necessarily affirmative sentences.

I. declarative sentences

As mentioned earlier, declarative sentences include affirmative sentences and negative sentences. So I will share the related usage of affirmative sentences and negative sentences in detail later. In other words, the usage of the following affirmative and negative sentences belongs to the usage of declarative sentences. It is suggested that students focus on the usage of affirmative sentences and negative sentences, so as to master the usage of declarative sentences.

Second, affirmative sentences

The basic structure is "subject+predicate" structure and its supplementary structure. The following are several commonly used affirmative sentences.

1. Subject +be verb+Predicate

He is very tall. ? He is very tall.

They are honest. ? They are honest.

Learning skills:

The be verb (am/ is/ are) here can also be changed into other verbs.

I feel much better. I feel much better.

The leaves turned yellow. The leaves turned yellow.

2. Subject+Predicate (intransitive verb)

There was a ring at the bell ? There was a ring at the bell

The game has started. ? The game has already started.

Learning skills:

When the predicate verb is an intransitive verb, it can be modified by adverbial although it cannot follow the object.

This car runs very fast. ? This car runs very fast.

My grandfather walks very slowly. My grandfather walks very slowly.

3. Subject+Predicate (transitive verb)+Object+(adverbial)

He wrote a letter yesterday. ? He wrote a letter yesterday.

They are playing football on the playground. ? They are playing football on the playground.

4. Subject+predicate (transitive verb)+indirect object+direct object

She passed? Give me a ball. ? She handed me a ball.

I gave him a hug. ? I gave him a hug.

5. Subject+predicate (transitive verb)+object+object complement

I painted it yellow. I painted it yellow.

I made her cry. I made her cry.

Learning Tip: These five basic sentence patterns are limited to simple sentences, that is, they only contain a predicate structure, excluding complex sentences and complex sentences.

Third, negative sentences

Generally speaking, negative sentences all contain the meaning of "no …".

1. Put not after the be verb (am/is/are).

I am a student. I am a student.

I am not a student. I am not a student.

They are in the classroom. They are in the classroom.

They are not in the classroom. They are not in the classroom.

(is not can be abbreviated as is notAre not and can be abbreviated as are not)

2. Modal verb +not

I can swim. I can swim.

I can't swim. I can't swim.

You must stay. You must stay.

You can't stay.

(Can be abbreviated as No; ; Must not can be abbreviated as musten t)

3. Auxiliary verb +not

The most commonly used auxiliary verbs are: be, have, do, shall, will, should, would, etc.

I'll be back soon. I'll be back soon.

I won't be back soon. I won't be back soon.

I have finished it. I have finished it.

I haven't finished it. I haven't finished it.

(not here = not yet, not yet = not yet)