Re: assume the presidency?
Hi Cynthia,
Please post one question per post. Otherwise, the answers get confusing.

Originally Posted by
cynthia550
1. Do Americans use the expression "How long has he assumed the presidency?"?
If that's not the case, how can you revise this sentence?
Not normally. If something happened to the president and someone else had to take over the office, you could use this, but throughout most of our history, they are elected. How long has he been president? When did he take office (as president)?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.