わからない個所を教えてください。
Chapter Four
In bare feet I light some of the candles I have placed around the room, and the cheerful light they cast drives away some of the shadows that have been tugging at me. I don’t feel ready to sleep yet. I want to think of something to push the uneasy memory of these fragments away, to give me something else to concentrate on as I lie in bed. Some part of me is aware that the old childhood fear could so easily come back to life now; the fear that I will wake, in a moment, to find myself old and dying, my life already spent. I can’t face that again. So I take one of the candles and wander the house with it, eventually finding my way upstairs. Once I am in my old bedroom, it seems the most obvious thing in the world to open the window there, and to sit on the sill, looking up the valley at night.
（前回の終わりの部分です）
I know this view to the last detail. The darkness obscures many of the small changes that are doubtless there, and would be clamouring their presence to me were it daylight. Now, though, I am only conscious that the branches of the tree that cut off the left-hand part of the horizon are longer by some small amount, and that the sound of the World Service radio is missing from downstairs. Above, the stars are unchanged; I look for Orion, and find him almost at once, a small smile of acknowledgement twitching the corner of my mouth. There are a few clouds low on the line of hills, but leaning out of the window I can see that the sky overhead is clear.
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主人公のAlexはartistで、幼い頃過ごしたイタリアに帰ってきています。
The darkness obscures many of the small changes that are doubtless there, and would be clamouring their presence to me were it daylight.の、would be clamouring their presence to me were it daylightがよくわかりません。
英文の構造はどうなっているのでしょうか？
wereが動詞、itは？？
Now, though, I am only conscious that the branches of the tree that cut off the left-hand part of the horizon are longer by some small amount,について、ここは木の枝がどうなっている状態なのでしょうか？
I look for Orion, and find him almost at once, a small smile of acknowledgement twitching the corner of my mouth.ここの a small smile of acknowledgement～の意味するところは、オリオン座を見つけたのでちょっと微笑んだ、という感じなのでしょうか？
教えてください。お願いします。
補足
ありがとうございます。後には何もついてないのですが....... 例題はこれです。 ☆例☆ Q.））））Take a small amount of acidified potassium permanganate solution and add a small amount of iron IIammonium sulfate solution. Test for iron IIIirons. Fe2+(aq) → Fe3+(aq) MnO4-(aq) → Mn2+（aq) A.）））））KMnOn-puple+Fe2+-clear went crear. We added SCN- Solution went blood-red-showed that Fe3+ was preasent So:Fe2+ + MnO4-→Fe3+ +Mn2+ Fe3+SCN- → Fe(SCN)2+