Help the HR manager complete this incident report by choosing the correct clause for each blank. Pay close attention to commas!
The employee who caused the explosion is currently hiding under a desk.
Mr. Henderson , who loves his espresso, was unfortunately standing right next to the machine.
Our brand-new espresso machine , which cost a fortune, is now completely ruined.
The correct sentences are: The employee who caused the explosion is currently hiding under a desk. Mr. Henderson**, who loves his espresso,** was unfortunately standing right next to the machine. Our brand-new espresso machine**, which cost a fortune,** is now completely ruined.
who caused the explosion is a defining relative clause identifying which employee, so it doesn't use commas.
Mr. Henderson is a proper noun (a specific person), so we use a non-defining relative clause with commas. Remember, we cannot use that in non-defining clauses!
Our brand-new espresso machine is a specific, unique item, so it also takes a non-defining relative clause with commas and which.