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

when --  "When" is an adverb that means "when", "as when", "at the time when," and "sometimes."

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

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. 

seven -- This is the numeral seven.

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

for -- The word translated as "among" means "into" a place, "towards" as a direction, "in regards to" a subject, and "up to" limits in time and measure. However, it also means "for a purpose," which is clearly the sense here.

missing "the/this"  -- (MW) The untranslated word is the Greek definite article," the," 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," and "those"). See this article for more. 

four thousand, -- "Four thousand" is an adjective that means "four thousand."

how many -- The adjective translated as "how many"  means "of what quantity," [in distance] "how far." [of number] how far," [of time] "how long," [of value] "how much", "how great", "how many," and "how much."

basket- -- (CW, WF) "Baskets" is from a Greek noun for a small basket, like a "nose-bag" or "nose-basket." This is a smaller basket than the one in the previous verse. These baskets are not the object of the verb but a description of the "filler."

-fuls  -- (CW, WP, WF) "Full" is a noun that captures various ideas of filling and completing, but here, we might simply say "the filler." This is a different Greek word than the "full" of the the previous verse. This is the object of the verb.

of -- This comes from the form of the following noun.  The form of this word requires the addition of extra words in English to capture its meaning.  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. 

pieces -- "Pieces" is a word that means "fragment" and "morsel." It is the noun form of the verb used above that means "break into pieces."

did -- This English helping verb is used to create questions, commands, negative statements, and smooth word flow in translation from Greek

you -- This comes from the second-person, plural form of the verb not the use of a pronoun.

pick --  "Pick" is one of Jesus's favorite "multiple meaning" words. It is a verb that means "to raise up", "elevate", "to bear", "to carry off", "to take and apply to any use," and "to cause to cease." Jesus uses this verb to refer to what will happen to "the son of man," which can apply either to his being raised from the dead or lifted up on the cross.

up -- This is from the prefix of the previous verb that means "up."