The passive .M.G.1 U.4 .L.1

Use the passive to emphasize what was done instead of who did it.

The passive is formed by combining a form of the verb to be with the past participle.

A phrase with the preposition by can follow the passive verb to indicate the doer of the action.  

Simple Present: People make this car in Japan

P.This car is made in Japan.

Simple Past:Engineers developed the suitcase in Netherlands

P. The suitcase was developed in the Netherlands.

Present Perfect: People have used our products all over the world

P.Our products have been used by travelers all over the world.

Future:Engineers will produce a clean engine in the future.

P. A clean engine will be produced in the future

Comparative Form Superlative Form

The hydrogen car is clean. (short adj)

It’s cleaner than other models.

It’s the cleanest car of all.

The bag is expensive. (long adj)

It’s more expensive than others.

It’s the most expensive bag

Use as … as to show two items are the same in some way.

The special suitcase is as expensive as a car.

Use not as … as to show that two items are not the same in some way.

The fold-up bicycle is not as bulky as a regular bicycle.

The new compact car looks like a bug.

That sounds like a good idea.