Constractive Conjunction and Modal Perfect

constrastive conjunction is...

Contrastive conjunctions

Contrastive conjunctions are used to link two different ideas or statement that has contrast  meaning.

Example
English	means	Indonesia
But		Tetapi
Still		Masih
Although		Walaupun
Though		Meskipun
Whereas		Sedangkan
While		Sementara
Yet		Namun
Despite		Meskipun
In spite of		Terlepas dari
However		Bagaimanapun
Nevertheless		Akan tetapi

Examples are:

►  It is a small but practical kitchen. 

►  Despite lower carbon dioxide emissions, diesel cars may promote more global warming than gasoline cars.

►   In spite of the cooling tend that has been observed for Antarctica as a whole, one region of the continent has actually contradicted the mean trend and warmed over the same time period: the Bellingshausen Sea region.

 
Modal Perfect

Modal verbs can be used in a variety of different forms. In a perfect tense. Here the modal verb is used to express possibilty or probabality . But since the modal is used totalk about the past, can we use words such as yesterday, last week, and a month ago.

Perfect Modal
could have _____ couldn't have _____	past ability
should have ____ shouldn't have ____	You did or didn't do something that was a good idea.
would have ____ wouldn't have __	past condition / past situation
may have _____ may not have _____	past possibility
might have ______ might not have _____	past possibility
must have ____ must not have ___	past probability.	This indicates that something probably happened in the past.

Examples are:

► The boy could have done the dishes himself, but his father decided to help.

► This house of cards would have fallen over if the person who built it hadn't been so careful.

► My grandfather may have used this camera when he was a young man, but I'm not sure.