Jake is the subject, so it goes to the left of the vertical line. Hopes is the verb so it goes to the right of the vertical line.
"To attend scout camp" is a direct object. Without going through the horizontal line, draw a vertical line after the verb. Then draw a little triangle as the base for a long vertical line that goes upward. Now draw a horizontal line on top, and write "attend." Draw a slanted line to the northwest and write "to." "Camp" is the direct object of "attend" and should be to the right. "Scout" is an adjective modifying "camp," so you need a diagonal from camp (towards the southeast).
"When he visits Canada this summer" is an adverb clause. Connect it to the verb "attend" with a vertical, broken line. "When" goes on this line, which connects to the verb "visits." The subject of this clause is "he." "Canada" is the direct object.
"This summer" is an adverb clause modifying "visits" (it tells "when"). Draw a slash from visits and write "this" on the slash, and then draw a horizontal line for "summer"
