English grammar
From UNLwiki
				
Conjunctions
* indicates optional representation
| Conjunction | Attribute | English | UNL | 
|---|---|---|---|
| after | @after | The books will be sent to the library after I have read them. | tim(send, read.@after) | 
| although | @although | Although they have arrived early they could not enter. | seq(enter, arrive.@although) | 
| and | @and* | He sold an apartment and bought a country-house. | and(buy, sell.@and) or and(buy, sell) | 
| as | @as* | The situation is not so bad as you suggest. | man(bad, suggest.@as) or man(bad, suggest) | 
| as | @because* | It`s empty, as it had been upside down | rsn(empty, upside.@because) or rsn(empty, upside) | 
| as | @when* | His hands trembled as he spoke. | tim(tremble, speak.@when) or tim(tremble, speak) | 
| as if | @as.@if | He gives orders as if he were the master of the house. | man(give, master.@as.@if) | 
| as though | @as.@if | He treated me as though I were a stranger. | man(treat, stranger.@as.@if) | 
| as well as | @and* | Robert, as well as Smith, deservers punishment. | and(Smith.@and, Robert) or and(Smith, Robert) | 
| because | @because* | He said he cannot go because he is very busy. | rsn(go, busy.@because) or rsn(go, busy) | 
| before | @before | Look before you leap. | tim(look, leap.@before) | 
| both... and | @and* | He both speaks and writes perfectly. | and(write.@and, speak) or and(write, speak) | 
| but | @but | He is young but sensible. | and(sensible.@but, young) | 
| either... or | @or* | He will arrive either tomorrow or the day after tomorrow. | or(day.@or, tomorrow) or or(day, tomorrow) | 
| even if | @even.@if | I intend to go even if it rains. | con(go, rain.@even.@if) or con(go, rain.@even) | 
| even though | @although | Even though I was really tired, I couldn`t sleep. | seq(sleep, tired.@although) | 
| except if | @except.@if | I intend to go except if it rains. | con(go, rain.@except.@if) or(go, rain.@except) | 
| for | @because* | We must go, for it is late. | rsn(go, late.@because) or rsn(go, late) | 
| if | - | I asked him if he intended to travel this month. | obj(ask, intend) | 
| if | @if* | If you promise to come, I will wait for you. | con(wait, promise.@if) or con(wait, promise) | 
| in case (that) | @in_case | He wears two watches in case one of them stops. | rsn(wear, stop.@in_case) | 
| neither... nor | @and* | He drinks neither tea nor milk. | and(milk.@and.@not, tea.@not) or and(milk.@not, tea.@not) | 
| nor | @and* | He would not buy it nor would he accept it as a gift. | and(accept.@and.@not, buy.@not) or and(accept.@not, buy.@not) | 
| not only... but also | @and* | Not only does Sue raise money for the symphony, but she also ushers at all of their concerts. | and(usher.@and, raise) or and(usher, raise) | 
| only if | .@if.@only | Only if you promise to come, I will wait for you. | con(wait, promise.@if.@only) or con(wait, promise.@only) | 
| or | .@or* | You must prove that you are right or apologize | or(apologize.@or, prove) or or(apologize, prove) | 
| since | @because* | Since you don`t like this model, I`ll show you another one | rsn(show, like.@because) or rsn(show, like) | 
| since | @since* | What have you been doign since I last say you? | tmf(do, say.@since) or tmf(do, say) | 
| so | @so* | We are late for the train, so we must take a taxi. | seq(take, late.@so) or seq(take, late) | 
| so that | @so* | He preferred to work in the morning, so that he might be free in the afternoon. | seq(free, prefer.@so) or seq(free, prefer) | 
| than | - | You are taller than he (is). | bas(tall, he) | 
| that | - | I know that is impossible. | obj(know, impossible) | 
| that | @because* | He is so hoarse that we can hardly hear what he says. | rsn(hear, hoarse.@because) or rsn(hear, hoarse) | 
| that | @so* | He ran that he might arrive in time. | seq(arrive.@so, run) or seq(arrive, run) | 
| then | @so* | Our expenses will be very heavy: we will have to buy a great number of books; then we`ll have to pay several debts. | seq(pay.@so, buy) or seq(pay, buy) | 
| though | @although | ||
| till | @until* | Wait till the day breaks. | tmt(wait, break.@until) or tmt(wait, break) | 
| unless | @unless | I shall go unless it rains. | con(go, rain.@unless) | 
| until | @until* | Wait until the day breaks. | tmt(wait, break.@until) or tmt(wait, break) | 
| when | @when* | When I arrive I will write. | tim(write, arrive.@when) or tim(write, arrive) | 
| whereas | @whereas* | You didn`t work yesterday, whereas he worked till midnight. | coo(work, work.@whereas) or coo(work, work) | 
| whether | - | I asked him whether he intended to travel this month. | obj(ask, travel) | 
| whether... or | @or* | I would like to know whether he is in France or in England. | or(England, France) | 
| while | @whereas* | You were punctual , while he is always late. | coo(punctual, late.@whereas) or coo(punctual, late) | 
| while | @while* | Remain standing while they sing. | dur(stand, sing.@while) or dur(stand, sing) | 
| yet | @but | He is extremely poor, yet he is as happy as a king. | and(king.@but, poor) | 
Tenses
- Simple present = @present (He speaks = speak.@present)
- Present progressive = @present.@progressive (He is speaking = speak.@present.@progressive)
- Simple past = @past (He spoke = speak.@past)
- Past progressive = @past.@progressive (He was speaking = speak.@past.@progressive)
- Present Perfect Simple
- @past (finished action that has an influence on the present): He has spoken many times about that = speak.@past
- @present.@perfect (action that is still going on): He has spoken since yesterday = speak.@present.@perfect
- @past.@recent (action that stopped recently): He has just spoken = speak.@past.@recent
 
- Present Perfect Progressive
- @past.@progressive (finished action that has an influence on the present): He has been speaking many times about that = speak.@ast.@progressive
- @present.@perfect.@progressive (action that is still going on) = He has been speaking since yesterday = speak.@present.@perfect.@progressive
- @past.@recent.@progressive (action that stopped recently): He has just been speaking = speak.@past.@recent.@progressive
 
- Past Perfect Simple = @past.@anterior (He had not spoken = speak.@past.@anterior)
- Past Perfect Progressive = @past.@anterior.@progressive (He had been speaking. = speak.@past.@anterior.@progressive)
- Future Simple = @future (He will speak = speak.@future)
- Near future = @future.@recent (He is going to speak = speak.@future.@near)
- Future Progressive = @future.@progressive (He will be speaking = speak.@future.@progressive.
- Future Perfect = @future.@anterior (He will have spoken = speak.@future.@anterior)
- Future Perfect Progressive = @future.@anterior.@progressive (He will have been speaking = speak.@future.@anterior.@progressive)
- Conditional = @past.@posterior (He would speak = speak.@past.@posterior)
- Conditional Progressive = @past.@posterior.@progressive (He would be speaking = speak.@past.@posterior.@progressive)
- Conditional Perfect = @past.@posterior.@perfective (He would have spoken = speak.@past.@posterior.@perfective
- Conditional Perfect Progressive = @past.@posterior.@perfective.@progressive (He would have been speaking = speak.@past.@posterior.@perfective.@progressive)