Dear All,
I'm confused that below sentence in especially "he backs this up by saying".
Could you help me what does this mean and what is the structure of this grammar.
This this thw whole sentence
"That means it's very important, it's perhaps the most important thing. And he backs this up by saying that it's the key thing. Something that's key is something that is essential, it's really important."
And he emphasizes that this is important by saying that it's the key thing. Back something up usually means provide evidence that it is true.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
. And he emphasizes that this is important by saying that it's the key thing.
Back something up usually means provide evidence that it is true.