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Compound Main Clauses
 Ex # 2 Based on the Second Story in The Snow Queen
From Stories from Hans Andersen with illustrations by Edmund Dulac
Analysis Key

1. The sun shone, | green buds began to appear [#1], | the swallows built their 

nests (DO), | and people began to open [#1] their windows (DO). |

2. He did it (DO) very well | and [#2] people laughed {at him}. |

3. The sledge drove twice {round the square}, | and Kay quickly tied his sledge (DO)

on behind [#3]. |

4. He shouted aloud, | but nobody heard him (DO), | and the sledge tore on 

{through the snow-drifts}. |

5. The Snow Queen kissed Kay (DO) again, | and then he forgot all (DO) {about

little Gerda, Grandmother, and all the others} {at home} [#4]. |

1. If the students have not studied verbals as direct objects, I would accept "to appear" (and later "to open") as part of the finite verb phrase. Otherwise, "to appear" and "to open" are verbals (technically infinitives) that function as direct objects. 
2. Note that the two main clauses, contrary to the rules in most grammar textbooks, are joined with an "and" without a preceding comma.
3. "On" and "behind" function as adverbs because they are prepositions with their objects ellipsed "on *the first sledge* behind *it.*
4. If "at home" does not seem "right" as an adjectival phrase that modifies "Gerda, Grandmother" and the "others," note that it is a reduction of an adjectival clause in which "at home" functions as an adverb -- "*who were* at home."