Language work

Date: 2015-10-07; view: 430.

The P-N Junction

Unit 10

Make up a short summary of the text.

I. Copy the underlined words and word-combinations, translate them into Ukrainian and learn them.

(II) If-clause (If I determined …, it would occur … )

or

For example:

· If I doped donor atoms at one end and acceptor atoms at the other end of a silicon crystal, it would have both P-type and N-type regions and there would be a junction between them.

· If free electrons and holes moved in a controlled manner, they wouldn't wander freely in the lattice.

I wish I determined…

wish + Past

For example:

· I wish I measured these parameters more carefully.

(=I don't measure them carefully)

· I wish I could gain the higher results. (I can't)

Remember:

If I were/if I was

I wish it were/I wish it was

For example:

· If I were you, I would correct this test.

or If I was you, …

· I wish it were possible.

(III) If-clause (If I had designed …, they would have set up … )

or

For example:

· If I had determined a fault, I would have corrected it. (but I didn't determine it)

· If one region had lost a positive charge, the other region would have gained it.

(but it didn't lose a positive charge)

I wish I had designed…

wish + Past Perfect

For example:

· I wish I had constructed my replica. I would have used it now. (but I didn't construct it)

· I wish I had corrected some measurements in my laboratory work. I would have obtained a higher result. (but I didn't correct them)