adjective, adverb within, conducted within, or utilizing an organization’s own staff or resources rather than external or nonstaff facilities: in-house research; Was the ad created in-house or by an outside advertising agency?

Inside is an adjective, noun, adverb or preposition. We use inside when we refer to the inner part of something.

Use the preposition outside to talk about people/things/animals that are not inside something: Please leave your shoes outside. There is a dog outside the shop. You will often hear ‘inside’ and ‘outside’ used by themselves as adverbs.

Since can be used in the following ways:

1. as a preposition (followed by a noun): Everything has changed so much since last spring.
2. as an adverb (without a following noun): She left home in 1993 and hasn’t been seen since.
3. as a conjunction (connecting two clauses): Paul’s had several different jobs since he left school.

1 : from a definite past time until now He moved and hasn’t returned since. 2 : before the present time : ago The poet is long since dead. 3 : after a time in the past She has since become rich.

adverb

Since sentence example

1. Since you arrived, she is not sure this is the way.
2. “It’s a long time since we met,” he said.
3. He’d been in a grumpy mood since he got up.
4. Since then he had treated her with total respect.
5. I haven’t even seen him since the funeral.

The most common linking verb is the verb to be in all of its forms (am, are, is, was, were, etc.). This verb may also be used as a helping verb (see next section). To become and to seem are always linking verbs.

Both a gerund and a present participle come from a verb, and both end in –ing. However, each has a different function. A gerund acts like a noun while a present participle acts like a verb or adjective.

To find gerunds in sentences, just look for a verb + ing that is used as a noun. It’s that simple.