Ⅳ V The verb 1. Special link verbs Y在这种情况下机器容易发热。 In this case, machines get hot easily Y该皮带平压在滑轮 pulley)上。 The belt lies /presses, rests/ flat on the pulley 其结果证明是正确的 Its result proves correct. 2. Semi-auxiliary verbs 最后提出了有待于解决的几个问题。 Finally, several problems which remain to be solved have been presentedare put forwardare glvenⅣ The verb 1. Special link verbs 在这种情况下机器容易发热。 In this case, machines get hot easily. 该皮带平压在滑轮（pulley）上。 The belt lies [presses; rests] flat on the pulley. 其结果证明是正确的。 Its result proves correct. 2. Semi-auxiliary verbs 最后提出了有待于解决的几个问题。 Finally, several problems which remain to be solved have been presented/are put forward/are given