David has grown three more inches.

[tufguy]

1) David has grown three more inches.

2) That tree has grown one more foot.

3) The tumor has grown a few more inches.

Please check my sentences.

 

[Rover_KE]

They need more information — like '... since I saw him three years ago'/'... in the last five years'/'... since my last MRI' (though a few more millimetres would be a more plausible growth rate for a tumour).

 

[tufguy]

They need more information — like '... since I saw him three years ago'/'... in the last five years'/'... since my last MRI' (though a few more millimetres would be a more plausible growth rate for a tumour).

1) David has grown three more inches since I last saw him.

2) That tree has grown one more foot in the last five years.

3) The tumor has grown a few more millimeters since your last MRI.

 

[emsr2d2]

1) David has grown three more inches since I last saw him. :tick:

2) That tree has grown one more foot in the last five years. :tick:

3) The tumor has grown a few more millimeters since your last MRI. :tick:

They're all OK and you'll hear all of them but note that you can remove the word "more" from all of them with no change in meaning. The use of "grown" makes "more" redundant.