Units examples by Amanda

Unit 13 - Adjective Clauses With Subject Relative Pronouns

"Looking for the rush that makes us feel alive."

In this sentence, the subject “that” is putting togheter two phrases (Looking for the rush and makes us feel alive), and substituting “rush” in the second part.
“The rush” is the noun that is being substituted in the relative clause, “that” is subject, “makes us feel alive” is the Adj. Clause.

Unit 15 - Modals

"You can do magic"

Modals are auxiliary verbs. They can express advice, possibilities... In this example, Can is the modal, and it's expressing present ability.

Unit 16 - Advisability in The Past

"I should have gone to Paris."

Should is a modal, and in this case is meaning "Regrets", because next to "should" there are have + verb (past participle). "SHOULD HAVE" REPRESENTS  actions that were good ideas in the past, but didn't happen.

Unit 17 - Speculation and Conclusions About the Past

"Jonny may might have left with George."

We use may have, might have or could have to express possibilities or speculation about something that happened in the past.  In this case, the person doesn't know if Jonny left with George, so it's a speculation.

Unit 18 - The Passive

"The TV was fixed by him"

Passive voice, the SUBJECT sufferS the action. In this case, the TV is the SUBJECT and it was fixed by someone, so the TV suffered the action.

"I( HE) fixed the TV"

In the Active voice  the person or thing(THE SUBJECT) dOES the action. In this case, "I" did the action, "I fixed".

Unit 20 - The  Passive Causative

"The grass was cut by Joanne" NO! I HAD THE GRASS CUT ( SUBJECT + HAVE + OBJECT+ V PP  eg: I WILL HAVE MY HAIR CUT/ SHE HAS HAD HER BIKE FIXED

We use Passive Causative to talk about something that someone did for us in the past. In this example, Joanne cut the grass FOR me, she did someting  FOR me.

Unit 21 - Present Real Conditionals

"When Sara goes to the mall, she drives her brother's car"

We use Present Real Conditional to express habits, something that happens often. In this case, everytime that Sara goes to the mall, she uses her brother's car.

Unit 22 - Future Real Conditionals 

"If  he pratice a lot, he will win the game"

It uses Future Real Conditional to express something that can  happen under certain conditionS. In this example, if the boys pratice more, probably he will win the game. 

Unit 23 - Present Unreal Conditional

"I wish I could fly"

Present Unreal Conditional, is a conditon that isn't real, impossible IN THE PRESENT , and their results too. In this case, I wished do something that it's impossible.