Premium economy shell seats on Japan Airlines. Premium economy is a travel class offered on some airlines. Positioning in price, comfort, and amenities, this travel class is leveled between economy class and business class. In 1991, EVA Air was the first to introduce Evergreen Class and had since become the first airline to offer this class of service in the world.
This sentence has two independent clauses. They are connected by and with a comma before it. The and and the comma are correct. However, adding a comma after thus is not correct because it is an adverb; the comma after it is not necessary. If thus is used as a conjunctive adverb (without and), a semi-colon and a comma are necessary.
If it is the first word in a sentence and is used to mean to whatever extent, you do not need a comma. However the prisoner escaped, he certainly left behind evidence.. When it is used as a conjunctive in the middle of a sentence, use a semi colon before it and a comma after it.She loves chocolate; however, she is lactose intolerant.. When used as a conjunctive at the end of a sentence, use a comma before it. just now. Report Abuse. usually the comma will go after.....and in some cases a semicolon; should be placed before the 'however' if it is in the middle of a sentence....this is not a problem if the 'however' is at the start of the sentence.....