could you please explain me how to use the following verb forms effectively along with constructions : 1. to be 2. to be able 3. have been able
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You are asking about two different verbs -- forms of "to be" and forms of "to be able"
I am not tall.
You are an English student.
She is my friend
We are studying English
You (all) are in the largest class on campus.
They are all taking their exam now.
He wants to be a scientist.
She hopes to be a singer.
They work hard to be successful students.
http://www.englishclub.com/grammar/verb-tenses_sys-tenses-be.htm
She wants to be able to translate fluently from French to Italian.
They have been able to move all the furniture into storage in less than an hour.
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Scroll down and read the sections starting with Modals.
Let us know if you have specific questions about the uses of these verbs and tenses.
Sure, I can explain how to use the verb forms "to be," "to be able," and "have/has been able" effectively along with their constructions.
1. "To be":
The verb "to be" is one of the most commonly used verbs in English, and it serves multiple purposes. It is used as a main verb, an auxiliary verb, and as a linking verb.
- As a main verb: When "to be" is used as a main verb, it expresses a state of existence or condition. For example:
- I am happy.
- They are students.
- He was tired.
- As an auxiliary verb: "To be" is also used as an auxiliary verb in different tenses, such as the present continuous (is/are + verb + ing) and the past continuous (was/were + verb + ing). For example:
- She is studying for her exams.
- We were playing in the yard.
- As a linking verb: "To be" is used as a linking verb to connect the subject of a sentence with a noun, pronoun, or adjective that describes or identifies the subject. For example:
- She is a doctor.
- The book is interesting.
- They were cold.
2. "To be able":
The verb form "to be able" is used to express the ability or capability to do something. It is often used with the modal verb "can" to convey present or future ability. For example:
- She can swim.
- They will be able to finish the project on time.
- I haven't been able to find my keys.
3. "Have/has been able":
The construction "have/has been able" is used to indicate past ability or achievement. It is formed by combining the present perfect tense of "have/has" with "been able." For example:
- He has been able to solve the problem.
- They have been able to reach a compromise.
- She hasn't been able to attend the meeting.
In summary, mastering the effective use of these verb forms involves understanding their different functions and structures. Practice using these forms in various sentence constructions, and pay attention to the context and tense to convey your intended meaning accurately.