人教新課標必修五unit1詞匯及語法解析
he has finished the work. 他做完了工作。
he has finished writing the paper.他已寫完了論文。
the new school will be completed next month.新學校下個月竣工。（不可用finish）
his unexpected visit ended our discussion of the problem. 他、突然來訪中斷了我們對那個問題的討論。
the party did not end until midnight. 晚會到半夜才結束。
25. cautious作形容詞，意為“謹慎的；非常小心的；細心的”，其后常用介詞about/with/of。
he was cautious when he was riding the bicycle.當他騎自行車的時候；他很小心。
she was cautious of strangers. 她對陌生人很警惕。
careful與cautious的用法區別：
careful的意思是“小心；仔細的；謹慎的”，表示很注意細節，行為小心以避免錯誤；cautious的意思是“十分小心的；謹慎的”，意義相近，但它所表示的是所有方面都仔細考慮之后才采取行為，帶有遲疑、提防等心理。
he gave the patient a careful examination. 他仔細檢查了病人的身體。
he was cautious about committing himself. 他對作出承諾很謹慎。
26. reject用作及物動詞，意為“拒絕；不接受；摒棄”。
we rejected his idea for a music club, and decided to have an art club instead.我們沒有采納他關于成立音樂俱樂部的想法，而是決定成立藝術俱樂部。
it is hard for me to reject some bad habits. 我很難丟掉一些壞習慣。
(1)reject表示拒不接受不適當、不滿足或厭惡的東西，如建議、計劃、贈物、求婚、正義、忠告等，語氣最強，有時還含有“拋棄；剔除”等意思。只可接名詞，主語只能是人。
(2)refuse是普通用語，指堅決、果斷甚至是粗暴的對別人的要求、請求、引誘或幫助加以拒絕，后接名詞、代詞或不定式，主語可以是人或物。
(3)decline常指婉轉的拒絕，近似漢語的謝絕，多用于對他人的邀請或提供的幫助。在與不定式連用時相當于一般的“拒絕”，可與refuse通用。
he rejected their invitation point-blank.他直截了當地拒絕了他們 的邀請。
she refused his offer. 她拒絕了他的提議。
the big clock refused to welcome the new year.這只大鐘不愿迎接新年。
we asked him to come to our party, but he declined (the invitation). 我們請他來赴宴，但他謝絕了。
he declined to answer the question.他拒絕回答那個問題。（可用refuse）
be against be for
語法解析：
he face wore a puzzled expression. 他臉上有一種困惑的表情。
(1)一般情況下，單個的過去分詞作定語，放在被修飾的詞之前；過去分詞短語作定語放在被修飾的詞之后，往往可用定語從句代替。
she had a worried look on her face. 她臉上有一種憂慮的表情。
i like eating the frozen food. 我喜歡吃冷凍食品。
the boy injured (who was injured) in the accident was taken to hospital. 在事故中受傷的男孩被送到醫院了。
there is a car parked (which is parked) outside the house. 房子外面停著一輛車。
(2)個別情況下，也有單個過去分詞作后置定語的。如：
there was nobody injured. 沒有人受傷。