Correctly to place punctuation marks in a complex sentence (SPP), it is necessary to define its type. For this purpose it is necessary to designate borders of the main thing and subordinate clauses. In most cases parts of SPP separate from each other a comma.
Main types of SPP
Complex sentence – a compound sentence in which one part depends on another on sense and grammatical. Subordinate clauses are connected to the main thing subordinating conjunctions: that, as, where, why, when, etc.
Depending on quantity of subordinate clauses of SPP are divided into two main groups: SPP with one subordinate clause and SPP with two and more additional.
If it is several subordinate clauses, then they can directly join the main clause. Happen as uniform (have equivalent value, at pronunciation separate intonation of transfer) or non-uniform. Other option – chain communication when the first subordinate clause depends on the main thing, the second subordinate clause – from the first, etc. Rules of arrangement of punctuation marks in a complex sentence are based on to what group it belongs. From definition of the main thing and subordinate clauses and also like communication between them it is worth beginning production of signs.
If subordinate clause one
The subordinate clause separates from the comma main thing: "I appreciate when trust me". If it costs in the main thing, then two commas are necessary – before a subordinate clause and after it. For example: "In the car by which we went the music played". The comma is not put if the subordinate clause incomplete, that is consists only of the union (connective word). For example: "I was asked who brought me. And I told who". If the subordinate clause begins with the compound union, then the comma is put either before it, or between its parts. Everything depends on intonation: "I here because I love you!" or "I here because I love you".
When it is several subordinate clauses
If subordinate clauses uniform, then each part of such complex sentence separates from others a comma. Example: "I see how you want to be pleasant to me how sincerely you look at me". If uniform subordinate clauses are divided by the union and, then the comma between them is not put: "I want us to be together and that did not quarrel". The comma will be necessary if subordinate clauses are divided by the repeating unions: "I love and when the sun and when pours a rain shines". Pay attention that the sign is put only before the second union and. If subordinate clauses non-uniform, commas between parts of SPP are necessary anyway. Example: "When we met, I told it that she looks good". At chain communication in SPP the parts of the offer also always separate from each other the sign: "I told that I will make cake which will be pleasant to all". If subordinating conjunctions are near, the comma between them is put: "My friend specified that if I do not come, he will take offense". The sign is not necessary if further in the offer there is the second part of the union – "that" or "so". For example: "We agreed that if it does not return within an hour, then I will go to look for it". Offers also can meet the combined communication. If you doubt how to put punctuation marks, draw the scheme of the offer. Designate all communications between its parts. The accurate scheme and knowledge of the basic rules will help not to get confused.