Replacing lines with pattern partialy by different file

[fuxin]

Hi all,

I have two files, where the 1. file has special lines that need to be updated by lines from a 2. file:
file1:

foo
foo
foo 0.00 0.00 0.00 pattern
foo
foo 1.00 1.00 1.00 pattern
foo

file2:

2.00 2.00 2.00
3.00 3.00 3.00

The last three columns of each line containing a"pattern" in file1 must be replaced by three columns of the corresponding line in file2. The result would be:
file1:

foo
foo 2.00 2.00 2.00 keyword
foo
foo 3.00 3.00 3.00 keyword
foo

I found already how to delete a complete line with a "pattern":

sed "/pattern/d" file1

But here I need to delete only the last three columns of a matched line. Is it possible to combine sed and awk to achieve this?

[Franklin52]

Something like:

awk '/pattern/{getline s < "file2"; $0=$1 FS s FS k}1' k="keyword" file1 > newfile