Please help me with some grammar?

Question

Vehicle Retirement Program: This Program is available to motorists who want to voluntarily retire their vehicle rather than repair it. Eligible consumers receive $1,000 in exchange for their vehicle. Approved vehicles must be driven to one of the state’s authorized dismantlers and pass a visual and operational inspection before the car is purchased and crushed.

I took this paragraph off from a site and wonder if someone can help me explain the grammar in the last sentence of this paragraph.

Approved vehicles must be driven to one of the state’s authorized dismantlers and pass a visual and operational inspection before the car is purchased and crushed.

Why approved is past tense

Why driven is in past participle ( I thought you only use driven when it's in simple perfect, past perfect and future perfect and those comes with: has, had, something like that)

Why authorized, purchased and crushed are in the past tense?

Answer 1

"must be driven" is the correct grammar to use for this sentence.

Authorized is past tense, because the dismantler would probably have had to already go through some process to be licensed to do that type of work....so, he has been authorized....past tense.

"Before the car is purchased and crushed" is also correct grammar.....it would be purchased and crushed AFTER passing the inspection, thus, the correct grammar is past tense.

Answer 2

The vehicle will be approved.

The car will be driven.

The car is going to be purchased.

The car is going to be crushed.

None of these are past tense.

The only thing "remotely" past tense is "authorized' because they were authorized in the past.  But even though they were authorized in the past, they are authorized now.  It is not a circumstance of "tense",  it is a circumstance of "being".

Answer 3

It assumes that you will make the decision to turn in the car, so it is already happened.

Or, if you wish "The car will be crushed"

Answer 4

"authorized" is simply the description of the credibility of the dismantlers. They're "authorized" to dismantle.

"purchased" and "crushed" are in the FUTURE tense, for which you also use "ed" at the end in these particular words. Something is GOING TO BE, but has not yet been, purchased/crushed.

Answer 5

Hmmm... Sounds like an English Professor trying to make sense of something written by a Lawyer.  

If you quit banging your head against the wall, it may stop hurting....

Good luck