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the teacher asks them to.A. aren’t allowed B. don’t allowC. haven’t allowed D. won’t allow2. —Whatever has happened to the saleswoman?—I don’t know. She _______ around here for a long time.A. hasn’t seen B. didn’t see C. hasn’t been seen D. hadn’t been seen3. Gold _______ in California in the nineteenth century.A. was discovered B. discovered C. had discovered D. was being discovered4. The girl went to the party without _______.A. inviting B. being invited C. to be invited D. invited5. _______ from the tower at night, the city looks more beautiful.A. To be seen B. Seeing C. Being seen D. Seen答案及解析:1. A。things后面接非謂語動詞作定語,動詞lose為及物動詞,其后沒有賓語,故在邏輯上被修飾的things是承受者,故要選具有被動和完成意義的過去分詞lost作定語。故選擇不定式的被動式。非謂語動詞train是及物動詞,后面沒有賓語,先考慮被動語態(tài)選項B和D。 如sell表示銷售狀況并跟有相應的副詞時,一般用作不及物動詞。故選擇were sold。所給動詞sell(賣、銷售)在此是及物動詞,其后沒有賓語,主語they是sell的承受者,優(yōu)先考慮被動語態(tài)選項B和C。若所給動詞是不及物動詞,就不需要考慮被動語態(tài)問題。因為語態(tài)容易判斷:當所給動詞是及物動詞,后面沒有帶賓語且句子的主語承受該動詞表示的動作時,就可先選定被動形式的選項。由even though引導的從句意義可知說話者帶有責備的語氣:對方本來應該救人以盡一個人的義務,而實際上沒有,ought to have done表示對過去情況的虛擬。由but for(要不是)可知實際情況是已經(jīng)擺脫了困境,所說的“不會擺脫困境”與過去事實相反,故用would have got。表示對過去的愿望時,wish后面的賓語從句謂語用過去完成式形式。3. A。事實是對方(you)什么也沒說就離家出走了。當as if從句表示與現(xiàn)在情況相反時,謂語用過去式,且be一般用were。1. When a chopstick is partly in a glass of water, it looks as if it _______.A. breaks B. has broken C. were broken D. has been broken2. We were really anxious about you. You _______ home without a word.A. mustn’t leave B. shouldn’t have leftC. couldn’t have left D. needn’t leave3. I didn’t meet Mr. Smith at the station. How l wish I _______ him.A. had seen B. saw C. have seen D. was seeing 4. But for your advice, I _______ out of the trouble last week.A. wouldn’t get B. wouldn’t have gotC. couldn’t get