think

[sash2008]

I think you are a good singer.
I thought you are a good singer.

does the second one imply this:
In the past, I thought that you are a good singer, but now you aren't.

[sarat_106]

Originally Posted by sash2008

I think you are a good singer.
I thought you are a good singer.

does the second one imply this:
In the past, I thought that you were/are a good singer, but now you aren't.

Yes, exactly so.

[Raymott]

Originally Posted by sash2008

I think you are a good singer.
I thought you are a good singer.

does the second one imply this:
In the past, I thought that you are a good singer, but now you aren't.

No it doesn't. "I thought you are a good singer" is wrong.
To convey your meaning, you need:
"I used to think you were a good singer" or
"I think you used to be a good singer" or
"I thought you were a good singer at one time"

but not "I thought you are ..."

[sash2008]

Originally Posted by Raymott

No it doesn't. "I thought you are a good singer" is wrong.
To convey your meaning, you need:
"I used to think you were a good singer" or
"I think you used to be a good singer" or
"I thought you were a good singer at one time"

but not "I thought you are ..."

Many thanks
Really I don't know how to thank you.

Mr Raymott, could you please have a look:
http://www.usingenglish.com/forum/as...nce-right.html

[TomKQT]

Originally Posted by Raymott

"I used to think you were a good singer" or
"I thought you were a good singer at one time"

"I think you used to be a good singer" or

Sorry for jumping in the topic, but it got my attention.

Am I right when I feel the first two sentences to have a very similar (or the same) meaning, while the 3rd one is a bit different?

[Raymott]

Originally Posted by TomKQT

Sorry for jumping in the topic, but it got my attention.

Am I right when I feel the first two sentences to have a very similar (or the same) meaning, while the 3rd one is a bit different?

They are all mean basically the same thing, and the connotations could be different depending on the context.