определить Participle I и Participle II и установить функции каждого их них(определение,обстоятельство или часть глагола)
1. When broken, the material has a black, silken fracture.
2. Iron oxide is the major problem when forging steel.
3. The film, made by Stephen Spielberg, is expected to be a great hit.
4. They watched the burning forest helplessly.
5. Owing to these methods it has become possible to obtain new mechanical properties of
the alloy.

1. When broken, (причастие 2, обстоятельство) the material has a black, silken fracture. 2. Iron oxide is the major problem when forging (причастие 1, обстоятельство) steel. 3. The film, made (причастие 2, определение) by Stephen Spielberg, is expected (причастие 2, часть сказуемого) to be a great hit. 4. They watched the burning (причастие 1, определение) forest helplessly. 5. Owing to these methods it has become (причастие 2, часть сказуемого) possible to obtain new mechanical properties of the alloy.