"Signal" is the verb.
Simple past tense. (assuming you are talking in the afternoon/evening etc)
signal
The plural form of the word signal is signals.
Yes, convey is a verb.
The verb of complaint is complain. As in "to complain to someone".
subject = soft voices and the patter of little feet verb = signal
approach
"Signal" can be a noun or a verb. As a noun, it refers to a sign, gesture, or sound used to convey information. As a verb, it means to communicate or indicate.
Approaching can be an adjective, an adverb and a verb. Adjective: Something that approaches. Adverb: Used in the context of meaning 'nearly'. Verb: The present participle of the verb 'approach'.
Nope. its an action verb.
No. Approach is an action verb. Approached is the past tense of approach. It might also rarely be used as an adjective.
It can be used as a verb meaning 'to approach'.
Used as a verb, meaning to come near to or approach
No, "approach" is not a preposition. It is a verb when indicating an action or a noun when referring to a method or way of doing something.
wave, jump, signal
Amplify is a verb. This device amplifies the signal from the microphone so that it can be heard.
Be sure to approach strange dogs with caution! (verb) Yelling is not the best approach for disciplining children. (noun)