So - (WW) The words translated as "therefore" are not the word usually translated as "therefore." There are two Greek words here meaning "by this."  The preposition translated as "by" means "through," "in the midst of," or "by (a cause)."  "This" is translated from a Greek word that means "this," "that," "the nearer."

ye --  This is from the second-personal pronoun in the form of a subject, which emphasizes it because this information is in the verb. The sense is "you yourselves."

missing "yourselves" -- (MW)  The subjective pronoun repeats the information in the verb so it should be repeated in English like "you yourselves."

also  - The Greek word translated as "also" is used as the conjunction "and," but it also is used to add emphasis ("also"). It is plural, so "you all."

must -- (IW) There is nothing that can be translated as "must" in the Greek source.

be  - (WW) The word translated as "be" means "to become," that is, to enter into a new state. In Greek, especially as used by Jesus, it is the opposite of "being," which is existence in the current state. It is in a form that could be a command or just a regular statement "you are becoming." It is in a form that indicates you do this for your own benefit.

ready:  - "Ready" is from an adjective which means "ready," "active," and "bold."

because - The word translated as "because " introduces a statement of fact ("seeing that") or cause ("since"). It is not the most common Greek word translated as "for." It is usually translated as "that."

the -- The word translated as "the" is the Greek definite article. The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

Son -- The word translated as "son" more generally means "child" or "descendant." The phrase "the son of man" is the common way Christ refers to himself. It is discussed in detail in this article. Its sense may be "the child of the man."

of -- This word "of"  comes from the genitive case of the following word that required the addition of a preposition in English.  The most common is the "of" of possession, but it can also mean "belonging to," "part of," "which is," "than" (in comparisons), or  "for," "concerning" or "about" with transitive verbs. 

missing "the"  -- (MW) The untranslated word is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

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

will  -- (WT) This helping verb "will" indicates the future tense, but the verb is not the future.

come  -- The word translated as "cometh" primarily means "to start out" but Jesus ally uses it to mean "come" but not always. It indicates movement, especially its beginning, without indicating a direction toward or away from anything, so it works either as "start," "come," or "go," but it is more like our phrase "being underway." Our English word "show up" captures both the "start" and "come" ideas. See this article for more.

at - This word "at" comes from the dative case of the word "hour" that requires the addition of a preposition in English. The most common is a "to" for the English indirect object. However, the translator can choose other prepositions: "with,"  "in,"   "of,"  "as," "by," "for," "at," or "on" depending on the context.

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

hour  - The word translated "an hour" means a period of time, generally, as we might say "moment," but it was also specifically one of the twelve division of daylight hours.

when   -   (WP) Now it gets interesting. The next word is translated as "when" is most likely adverb that has a very broad meaning, including "how," "when," "where," "just as," "like," "as far as" and related words, but, obviously "when" works well here. The problem is that the following verb isn't the right form for a "when" clause (the form of possibility, the subjunctive, nor is this the word Jesus usually uses in a when clause.

you - -- This is from the second-person, plural form of the verb.

do -- This helping verb is used to create questions, commands, negative statements, and smooth word flow in English, but the Greek could be either a question or a statement.

not  - The Greek word translated as "not" is the Greek negative used to deny objective facts, not opinions. It makes a negative statement of fact. Adding "really" to the sentence captures the same idea.

expect -  "Expect" is from a verb that doesn't mean think as much as it means "expect" or "imagine." Obviously, those meanings, especially "expect," fit much better here.

him -- This English objective pronoun is added and not in the Greek source.   In Greek, pronoun objects are not repeated after each verb because they are implied by their first occurrence.