Let's analyze the sentences one by one to identify the subject and object expressed by an infinitive, state their types, and provide translations into Russian.
I find it hard enough to pick my own way along.
- Subject: I (simple)
- Object: it (anticipatory) / to pick my own way along (infinitive phrase functioning as object complement)
- Translation: Мне достаточно трудно выбрать свой путь.
Herbert took it on himself to comfort me.
- Subject: Herbert (simple)
- Object: it (anticipatory) / to comfort me (infinitive phrase functioning as the object of the preposition)
- Translation: Херберт взял на себя заботу меня утешить.
It is good exercise to climb mountains.
- Subject: it (anticipatory) / to climb mountains (infinitive phrase functioning as subject complement)
- Object: None
- Translation: Это хорошая физическая нагрузка - подниматься в горы.
She thought it best to prepare him for the news.
- Subject: She (simple)
- Object: it (anticipatory) / to prepare him for the news (infinitive phrase functioning as object complement)
- Translation: Она решила, что лучше подготовить его к новостям.
It is impossible to understand what you mean.
- Subject: it (anticipatory) / to understand (infinitive phrase functioning as the subject complement)
- Object: None
- Translation: Невозможно понять, что вы имеете в виду.
Hugo finds it very hard to express himself on paper at all.
- Subject: Hugo (simple)
- Object: it (anticipatory) / to express himself on paper (infinitive phrase functioning as object complement)
- Translation: Хьюго считает очень трудным выражать себя на бумаге.
It will be nice to see you.
- Subject: it (anticipatory) / to see you (infinitive phrase functioning as subject complement)
- Object: None
- Translation: Будет приятно увидеть тебя.
We didn't think it necessary to paint the walls.
- Subject: We (simple)
- Object: it (anticipatory) / to paint the walls (infinitive phrase functioning as object complement)
- Translation: Мы не считали нужным покрасить стены.
It was kind of you to look after the children.
- Subject: it (anticipatory) / to look after the children (infinitive phrase functioning as the subject complement)
- Object: None
- Translation: Это было мило с вашей стороны заботиться о детях.
It will be a great surprise to find him at home.
- Subject: it (anticipatory) / to find him at home (infinitive phrase functioning as the subject complement)
- Object: None
- Translation: Это будет большим сюрпризом - обнаружить его дома.
It is wrong to laugh at another's weakness.
- Subject: it (anticipatory) / to laugh at another's weakness (infinitive phrase functioning as subject complement)
- Object: None
- Translation: Неправильно смеяться над слабостью другого.
She found it hard to focus on any item.
- Subject: She (simple)
- Object: it (anticipatory) / to focus on any item (infinitive phrase functioning as object complement)
- Translation: Она считала трудным сосредоточиться на каком-либо пункте.
It was impossible not to pause and read various labels.
- Subject: it (anticipatory) / not to pause and read (infinitive phrase functioning as subject complement)
- Object: None
- Translation: Было невозможно не остановиться и не прочитать различные ярлыки.
These translations maintain the meaning while providing clarity in Russian.