M. Iriskulov, A. Kuldashev a course in Theoretical English Grammar Tashkent 2008

participial adverbial phrase as a constituent of the semi-complex sentence of 
adverbial complication. 
Semi-compound sentence is a semi-composite sentence built up on the 
principle of coordination. Semi-compound sentence is derived from 2 base 
sentences having an identical element performing the syntactic function of the 
subject or that of the predicate. The semi-compound sentences fall into those with 
coordinated subjects or coordinated predicates with syndetic or asyndetic 
connection.
The semi-compound sentence of subject coordination is derived from base 
sentences having identical predicates, e.g.: First Simon entered the room and then 
his friend. 
The semi-compound sentence of predicate coordination is derived from base 
sentences having identical subjects, e.g.: She sat down and looked up at him. 
He opened the door to see a young woman 
outside.
The syndetic formation of semi-compound sentences with coordinated 
predicates is effected by pure conjunctions, such as: “and” (copulative); “but”, 
“or”, “nor” (adversative); “both … and” (simple copulative relation); “not 
only…but also” (copulative antithesis); “either … or” (disjunctive); “neither… 
nor” (copulative exclusion); and by conjunctive adverbials such as: “then” (action 
ordering), “so” (consequence), “just” (limitation), “only” (limitation), “yet” 
(adversative-concessive), 
e.g.: They can neither read nor write, nor comprehend such concepts., (for more 
examples see Bloch M.Y. A Course in Theoretical English Grammar. - p. 354-
355).
Thus, the semantic relations which are expressed by conjunctions and conjunctive 
adverbials are as follows: copulative connection of events, contrast, disjunction, 
consequence, limitation: 
- copulative: and; both…and (simple copulative)
not only …but (copulative antithesis) 
neither … nor (copulative exclusion) 
- disjunction: either …or; 
- consequence: so; 
- adversative or contrast: but, yet, still, however; 
- limitation: just, only.
The asyndetic formation of the semi-compound sentence with coordinated 
predicates is close to the syndetic “and”-formation (without a definite mark of the 

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semantic relations). The central connective meaning of the asyndetic connection of 
predicative parts is enumeration of events, either parallel or consecutive, 
e.g.: The crowd shouted, pushed, elbowed at the doors (parallel);
He stopped at the shop for a minute, cast a glance at the shop-window, made some 
recommendations (consecutive). 
In conclusion it should be stressed that alongside of the complete composite 
sentences there exist in Modern English semi-composite sentences in which 
polypredication is expressed in a fused implicit way.