Behold -- "Behold" is a verbal command meaning "See!" and "Look!" It is from the most common word meaning "to see" in Greek. Taken as a verb, the form would be Jesus telling the apostles to look for themselves, but he isn't doing this. In a humorous vein, it is also an adverbial exclamation like we use the phrase "tah-dah" in a magic show, or "voila" in French. "Look!" or "See!" comes closest in English. Jesus uses it both ways. The latter seems to be its use here.

when -- The "when" here comes from the form of the following verb and noun, in a form called the genitive absolute which has a special use in Greek to indicate something happening at a time relative to the main clause. Here, the tense of the verb indicates that the action here occurs before the main clause so "after" is better.

ye  --- The word translated as "ye" is plural addressing a group. It is not in the form of a subject, but it is a form that when used with a participle creates an introductory phrase that has the sense of "while you".

are -- This helping verb used here to form the present, progressive tense, which doesn't exist in Greek but which can smooth the flow of English sentences. Here it is used to indicate the flow of action in the sense of "after you entered,".

entered -- "Entered" is a verb that means "go or come into" and has the double meaning of "coming into one's mind".  The primary meaning of the root word is "to start". The form is not an active verb but that of an adjective, has the sense of "entering" or "entered".

into -- The word translated as "into" means "into" a place, "towards" as a direction, "in regards to" a subject and "up to" limits in time and measure.

the -- The word translated as "the" is the Greek definite article, "the", which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this", "that", "these", "those") than the English "the". See this article for more. 

city -- The Greek word for "city" meant not only a city but a nation, culture, or a society. It worked something like the word "community" today.

there -- (IW) This word is not in the Greek source.

shall -- This helping verb "shall" indicates the verb is in the future tense. Helping or auxiliary verbs are needed to translate the Greek verb forms into English.

a -- There is no indefinite article in Greek, but when a noun doesn't have a definite article, the indefinite article can be added in English translation.

man -- The Greek word for "man" means "man", "person" and "humanity" in the singular. In the plural, it means "men", "people" and "peoples". 

meet -- "Meet" is a verb that Jesus only uses here. It means to "meet face to face", "encounter", "meet with" and "come in contact with". It is from a root that is frequently used that means "gather". The form gives it a third person masculine subject, so "he will meet you". However, the form also indicates that the subject is working on itself, so "he will meet you for himself". This suggests that the man was planning on meeting them.

you -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you", "for you", etc. 

bearing - "Bearing" is from a verb that means to "lift up", "raise", "endure" and "bear". Jesus only uses it six times, always in the sense of taking up a heavy responsibility.

a -- There is no indefinite article in Greek, but when a noun doesn't have a definite article, the indefinite article can be added in English translation.

pitcher -- "A pitcher" is an uncommon word that means an "earthenware vessel" and "jar".

of -- This word "of" comes from the possessive form (genitive case) of the following word that requires the addition of a preposition in English.  The most common is the "of" of possession.

water -- The Greek word translated as "of water" means "water", "spring water", "drinking water", "rain water", "rain", "time running out" (from the water clocks used in courts), "liquid", the constellation Aquarius, the winter solstice, and a place with mineral waters.

follow -- The term "follow" means "to follow" or "go with", in a physical sense, but it is also a metaphor meaning "to be guided by" or "to follow the meaning of".  The form is a command.

him -- The word translated as "him" is the Greek word commonly translated as third-person pronouns in English.  The word means "the same" when used as an adjective. In the adverbial form, it means "just here" or "exactly there".

into -- The word translated as "into" means "into" a place, "towards" as a direction, "in regards to" a subject and "up to" limits in time and measure.

 the -- The word translated as "the" is the Greek definite article, "the", which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this", "that", "these", "those") than the English "the". See this article for more. 

house -- The Greek word translated as "house," refers to the building itself, all the people that dwell in it, including slaves and servants, all property owned by that family, and all the descendants of the continued line. We might say "estate" in English to capture this idea.

missing "into"  -- (OS) The untranslated word "into" means "into" a place, "towards" as a direction, "in regards to" a subject, and "up to" limits in time and measure.

where -- -- (OS) There is nothing in the Greek that can be translated as this in the source we use today but it does exist in the source that the KJV translators used. The word used in today's source meaning "which" is a demonstrative pronoun ("this", "that"), but it often acts as a pronoun ("the one that"), especially a connective pronoun ("the one that") introducing a dependent clause.

he -- This is from the third-person, singular form of the verb.

entereth -- (CW)  "He entereth in" is a verb that means "lead in", "go into" and "enter".  The word begins with the same preposition as above.  This word is not the same word translated as "enter" earlier in the verse.  

in - This completes the meaning of the verb. It is from the prefix.