I'd like to know the difference between start and starting when use as a noun. I saw the following sentence and could not understand why it shold be "to starting" instead of "to start".
He is looking forward to starting his job next week.
I'd like to know the difference between start and starting when use as a noun. I saw the following sentence and could not understand why it shold be "to starting" instead of "to start".
He is looking forward to starting his job next week.
Look forward to requires a noun, as you know. The gerund starting is a verb form which functions as a noun, so "look forward to starting" is correct. The to here is not a particle in a verb; it's a preposition, and the preposition licenses only a noun.
Start is a noun as well as a verb; a race has a start and an end. However, a peculiarity of English nouns (as opposed to, say, Russian) is that they usually require some sort of determiner.
So one might say "He's looking forward to the start of his job next week," but that does mean something subtly different from the original "starting his job".
He is looking forward to starting his job next week.
To there is a preposition that normally requires a noun as its complement. It can also take a gerund (verb+ing) because a preposition can generally license a gerund**(*** i.e. starting *) as opposed to other classes of verbs.( A gerund is close to a noun). Still, starting is a verb and that's the reason why it can take his job as its own object.
He is looking forward to start his job next week.
This one is ungrammatical. Preposition to cannot license this form of verb.
But start is a noun if preceded by a determiner like the and takes an of phrase complement as exemplified in Andrew Leach's example.
He's looking forward to the start of his job next week.
The "to" in "looking forward to" is a preposition, and requires a noun phrase after.
While both "start" and "starting" can be used as nouns, they are used with different structures.
The noun "start" cannot have a direct object like "his job". The word "start" can only have a direct object if it is a verb, so "start his job" is always verb phrase, never a noun phrase, which means it cannot follow the preposition "to".
The gerund "starting", however, is a verb acting as a noun, so it can have a direct object, so "starting his job" is a valid noun phrase, and it can come after the preposition "to".