The present perfect continuous tense or present perfect progressive tense is used to talk about ongoing actions or situations that started in the past and continue up until the present moment. It's a combination of the present perfect tense (have/has been) and the progressive aspect (present participle).
For example, let's say you want to talk about an activity you've been doing recently. You can use the present perfect progressive tense like this:
"I have been studying for my exams for 3 months." This means that you started studying in the past and you're still studying now.
To form the present perfect progressive tense, we use the helping verb "have" or "has" (depending on the subject), followed by "been," and then the present participle (-ing form) of the main verb.
Here are a few more examples:
(Positive declarative: Sub + H.V (has been/have been) V4 (ing) Obj/Cmp + Since/for + obj)
He has been playing cricket for two hours.
I have been teaching English since 2018.
She has been talking to Ali for 5 years.
You have been staring at me since morning.
Fabiha has been reading this book for weeks.
Zaid and Haris have been racing since dusk.
We have been waiting here for 5 minutes.
It has been burning since Monday.
They have been working here for ten days.
Use of "since" and "for":
"Since" and "For" are both used to indicate the duration of time in relation to a specific point in the past.
We use "since" to refer to the starting point of an action or event. For example, "I have been studying since morning" means that the study started at some point in the morning and is still ongoing.
On the other hand, we use "for" to indicate the length of time that an action or event has been happening. For example, "I have been studying for two hours" means that the study has been going on for a duration of two hours.
To summarize:
"Since" indicates the starting point of an action or event.
"For" indicates the length of time that an action or event has been happening.
Since is used before an uncountable object and "for" is used before a countable object.
Remember, the present perfect progressive tense emphasizes the duration or ongoing nature of the action. It's a great way to describe activities that started in the past and are still happening right now.
Links to videos:
Since and For:
• Since and For | Preposition of time |...
Types of sentences:
• Types of sentences | kinds of sentenc...
Object vs conplement:
• Difference between object and complem...
Transitive & intransitive verbs:
• Transitive and intransitive verbs | t...
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