Find out the usage of infinitive to in junior middle school English.

The infinitive is a kind of non-predicate verb structure composed of "infinitive symbol to+ verb prototype". Some infinitives without to can be used as subject, predicative, object, attribute, complement, adverbial or alone. The infinitive retains some features of verbs and can have its own object, adverbial, etc. The infinitive of the verb, the object and adverbial behind it form a phrase, which is called an infinitive phrase.

Used as subject

There are not many cases where infinitives are placed directly at the beginning of sentences. In most cases, it is used as the formal subject, and the real subject-infinitive is put at the end of the sentence, especially when the infinitive phrase is very long. The infinitive is the subject and the predicate verb is the singular form of the third person. Infinitive phrases with interrogative words are often placed at the beginning of sentences, and compound infinitive structures are often placed at the end of sentences. For example:

Both the formal subject and the formal object should be used, and no other words can be used. Remember!

1. As young people, we have the responsibility to try our best to deal with every problem.

Challenge ... (page 8)

Is the official subject, and the real subject is the underlined part of the text.

The head teacher said it was necessary to talk to his mother.

(p. 16)

How to make a request politely is very important. (page 93)

The underlined part is regarded as three forms.

Second, it is used as a predicative.

Verb infinitives as predicative often explain the content, nature and characteristics of the subject. For example:

Why can't everyone write long sentences? There is not much accumulation. Recite more and think more.

1. The best way to improve English is to join an English club.

(Page 7)

The first thing is to greet the teacher. (page 96)

Third, used as an object.

1. Verbs that can follow the infinitive with to are:

Ask, choose, agree,

Expect, hope, decide, learn,

Would rather pretend to know (prefer, pretend, know),

Hope, want, like/love.

For example:

1) We decided to talk to some students about why they went there. (page 88)

He prefers to eat white bread and rice. (P.50)

I want to go to Mexico. (page 53)

2. Verbs decide, know, learn, show and teach,

You can use the infinitive phrase with the interrogative word to as the object, but the infinitive after why is not necessary. For example:

Can you tell me where to park? (page 92)

2) It gives advice on what to do in many different situations. (page 32)

After the verbs feel, find, make, think, etc. Can be used as a formal object instead of a real object-infinitive verb, and the sentence structure is ... feeling/discovery.

/make/... do something ... For example:

This knowledge point is the key point, and everyone should remember it. Such sentences are the main points in the composition. Write complex grammar to make the reviewers shine. Plus points! ! !

I find it difficult to remember everything. (page 98)

4. infinitive and V v-ing can be used as objects, and verbs with little difference in meaning are begin, start and like.

Love, etc. Generally speaking, infinitive means one or several specific actions, the whole process of future actions or actions, and V v-ing means habitual continuous actions. For example:

1) Then I started watching English TV. (Page 6)

2) I began to understand my China roots and who I am. (p. 1 16)

Begin uses the progressive tense followed by an infinitive as the object, indicating that things have just begun and will continue.

3) I like to eat vegetables. (p. 1 18)

Emotional verbs such as, love and know. Generally, the progressive tense is not used.

5. Verb infinitive or v v-ing is followed by an object, and all verbs with different meanings are forgotten.

Remember, wait An infinitive followed by an object indicates that the action has not yet taken place; Followed by v v-ing as the object, indicating that the action has taken place. Stop and do another thing

Do is an adverbial of purpose; Stop doing stop doing or not doing the current thing, doing is the object. Try to do it, try to do it; after that

If you do it, you will continue to do other things, and if you continue to do it, you will continue to do the original things. For example:

I forgot to bring it when I left home. (p. 107)

2) I stopped using it last year. (p. 12 1)

Used as an attribute

1. The subject or object of the sentence is the logical subject of the infinitive. When there is a logical verb-object relationship between the infinitive and the nouns and pronouns it modifies, the active form of the infinitive is used. For example:

I have a lot of housework to do today. (p. 1 12)

I can't think of any good advice for her. (p.3 1)

3) Basketball has also become an increasingly popular sport.

Watch this. (page 75)

In other words, infinitives can be used as attributes.

2. Nouns modified by infinitive are place, time, way, etc.

He needs time to do housework. (P. 19)

Is that a good place to hang out? (page 88)

You want to know the best way to visit the city. (p. 127)

3. In the sentence pattern of "You ……", the subject of the sentence is the object of the infinitive action of the verb, and it is often active. For example:

There are so many things to see and do here. (page 49)

2) ... but there are still many things to do there. (page 54)

5. Used as a complement

When infinitives are used as complements, active voice sentences complement the object and passive voice sentences complement the subject. The object or subject of a sentence is the logical executor of the infinitive action.