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Present Perfect Continuous Tense:

✅ Structure of Present Perfect Continuous Tense:

Subject + has/have + been + verb(-ing)

Use has been with he, she, it

Use have been with I, you, we, they

✅ Uses:

We use the present perfect continuous tense to show:

An action that started in the past and is still continuing

An action that just stopped, but we can see the result now

✅ Examples:

I have been studying for two hours.
(I started studying two hours ago and I’m still studying.)

She has been working at the company since 2020.
(She started in 2020 and still works there.)

They have been playing football all afternoon.
(They started earlier and are still playing or just finished.)

We have been waiting for the bus for 30 minutes.
(We started waiting 30 minutes ago and we’re still waiting.)

He has been reading that book all day.
(He started reading earlier and may still be reading now.)

Common Subordinating Conjunctions Used in Complex Sentences:

1. Cause & Effect: (Explain reasons or results)

Because

Since

As

So that

Examples:

She stayed home because she was sick.

Since it was raining, we took an umbrella.

2. Contrast & Concession: (Show differences or unexpected results)

Although

Even though

Though

Whereas

While

Examples:

Although he was tired, he kept working.

She smiled even though she was upset.

3. Condition: (Express conditions)

If

Unless

Provided that

As long as

Examples:

We will go to the park if it doesn’t rain.

Unless you study, you will fail the test.

4. Time: (Indicate when something happens)

When

While

After

Before

Since

Until

Examples:

I will call you when I get home.

Before you leave, turn off the lights.

5. Purpose: (Show intention)

So that

In order that

Examples:

She speaks slowly so that everyone can understand her.

6. Manner & Comparison: (Show how something happens)

As

As if

As though

Examples:

He runs as if he is being chased.