celta help me PLEASE

HI there I am taking CELTA (wow its a tough course)

I can't quite get my head around analysing language... I was wonder to get some help....

I don't even know what tense these are written in and I struggle hugely with word stresses in sentences, PLEASE HELP!!!!!

Here are my four things to analyse

1. This time last week, I was lying on the beach (analyse as a structure)



2. If I had studied, I would have passed (analyse as a structure)



3. Would you mind closing the window? (analyses as a functional exponent)



4. Economise (what other word are in this word family?)


PLEASE HELP I feel hopeless

[Tdol]

Please put your analysis here first; we don't do assignments, but we will help.