大學(xué)英語四級考試高頻詞匯精選精學(xué)課程第1講
詞匯、語法的掌握是應(yīng)對大學(xué)英語四六級考試的基礎(chǔ)，英語常用到的詞匯，為備戰(zhàn)英語四六級做準(zhǔn)備。
It be essential that 后面一定用虛擬語氣，且句子謂語動詞固定為 + 動詞原型;
It was essential that the applications forms send back before the deadline.
53. We _D_ our breakfast when an old man came to the door.
A just have had B have just had C just had D had just had
when 還可以表示①剛..就 、②恰在此時;
44. I had just started back for the house to change my clothes _D_ I heard voices.
A as B while C after D when
45. I felt somewhat disappointed and was about to leave, _C_ something occurred which attracted my attention.
A unless B until C when D while
64. It was essential that these application forms _D_ back as early as possible.
A must be sent B will be sent C are sent D be sent
非謂語動詞與獨(dú)立主格：短語，句子
1.當(dāng)短語部分有獨(dú)立主語，并且該主語不同于句子主語，這時短語結(jié)構(gòu)稱為獨(dú)立主格。。
獨(dú)立主格的結(jié)構(gòu)1：名詞+ 分詞
現(xiàn)在分詞表示主動的，正在進(jìn)行的行為;過去分詞表示被動的，已經(jīng)完成的行為。 作題時要通過判斷動作與名詞之間的關(guān)系來確定是使用現(xiàn)在分詞還是過去分詞。當(dāng)動作由名詞發(fā)出時使用現(xiàn)在分詞，而名詞是受動者時則用過去分詞。
54. Silver is the best conductor of electricity, copper _B_ it closely.
A followed B following C to follow D being followed
49. All things _A_, the planned trip will have to be called off.
A considered B be considered C considering D having considered
call off 取消; cancel vt. 取消; 四級中的考點(diǎn)就是現(xiàn)在分詞和過去分詞的區(qū)別。
獨(dú)立主格的結(jié)構(gòu)2：with + 名詞+ 分詞
36. After the Arab states won independence, great emphasis was laid on expanding education, with girls as well as boys _C_ to go to school.
A to be encouraged B been encouraged C being encouraged D be encouraged
as well as 和; be encouraged不會考。
動詞不定式有預(yù)示將來行為的含義。to be encouraged 將要被鼓勵;
been encouraged 已經(jīng)被鼓勵完了，與主句的謂語動詞相對;being encouraged 正在被鼓勵
2.短語部分沒有獨(dú)立主語，則短語結(jié)構(gòu)稱為非謂語動詞。
非謂語動詞的結(jié)構(gòu)：分詞
句子的主語決定非謂語動詞中的分詞是用主動還是被動形式。如果是句子的主語發(fā)出動作，則使用現(xiàn)在分詞;如果動作不是由句子的主語發(fā)出，則使用過去分詞。
詞匯、語法的掌握是應(yīng)對大學(xué)英語四六級考試的基礎(chǔ)，英語常用到的詞匯，為備戰(zhàn)英語四六級做準(zhǔn)備。
It be essential that 后面一定用虛擬語氣，且句子謂語動詞固定為 + 動詞原型;
It was essential that the applications forms send back before the deadline.
53. We _D_ our breakfast when an old man came to the door.
A just have had B have just had C just had D had just had
when 還可以表示①剛..就 、②恰在此時;
44. I had just started back for the house to change my clothes _D_ I heard voices.
A as B while C after D when
45. I felt somewhat disappointed and was about to leave, _C_ something occurred which attracted my attention.
A unless B until C when D while
64. It was essential that these application forms _D_ back as early as possible.
A must be sent B will be sent C are sent D be sent
非謂語動詞與獨(dú)立主格：短語，句子
1.當(dāng)短語部分有獨(dú)立主語，并且該主語不同于句子主語，這時短語結(jié)構(gòu)稱為獨(dú)立主格。。
獨(dú)立主格的結(jié)構(gòu)1：名詞+ 分詞
現(xiàn)在分詞表示主動的，正在進(jìn)行的行為;過去分詞表示被動的，已經(jīng)完成的行為。 作題時要通過判斷動作與名詞之間的關(guān)系來確定是使用現(xiàn)在分詞還是過去分詞。當(dāng)動作由名詞發(fā)出時使用現(xiàn)在分詞，而名詞是受動者時則用過去分詞。
54. Silver is the best conductor of electricity, copper _B_ it closely.
A followed B following C to follow D being followed
49. All things _A_, the planned trip will have to be called off.
A considered B be considered C considering D having considered
call off 取消; cancel vt. 取消; 四級中的考點(diǎn)就是現(xiàn)在分詞和過去分詞的區(qū)別。
獨(dú)立主格的結(jié)構(gòu)2：with + 名詞+ 分詞
36. After the Arab states won independence, great emphasis was laid on expanding education, with girls as well as boys _C_ to go to school.
A to be encouraged B been encouraged C being encouraged D be encouraged
as well as 和; be encouraged不會考。
動詞不定式有預(yù)示將來行為的含義。to be encouraged 將要被鼓勵;
been encouraged 已經(jīng)被鼓勵完了，與主句的謂語動詞相對;being encouraged 正在被鼓勵
2.短語部分沒有獨(dú)立主語，則短語結(jié)構(gòu)稱為非謂語動詞。
非謂語動詞的結(jié)構(gòu)：分詞
句子的主語決定非謂語動詞中的分詞是用主動還是被動形式。如果是句子的主語發(fā)出動作，則使用現(xiàn)在分詞;如果動作不是由句子的主語發(fā)出，則使用過去分詞。
