被動語態(tài)
助動詞be + 及物動詞的過去分詞
含有情態(tài)動詞：情態(tài)動詞+ be + 及物動詞的過去分辭
短語動詞 ：example takes good care >> taken good care
虛擬語氣
用來表示非真實(shí)的假設(shè)，表示命令、建議或說話人的主觀愿望
條件從句 主句
違背現(xiàn)在事實(shí) 過去式 should / would / could / might + 動詞原形
If the manager were here , he might make a decision immediately
違背過去事實(shí) had + 過去分詞 should / would / could / might + have + 過去分詞
I could have done it better if I had been more careful
違背將來事實(shí) should + 動詞原形 should / would / could / might + 動詞原形
were + 動詞不定式( were to + 動詞原形)
If it should rain tomorrow , what could we do ?
在下列結(jié)構(gòu)的主語從句中，謂語動詞用虛擬語氣
It is necessary / imperative / important / essential / advisable that
It is proposed / desired / requested / suggested / recommended / demanded / decided / arranged that
混合虛擬句 條件從句表示的動作和主句表示的動作，在時(shí)間上不一致，動詞形式需要調(diào)整
If you had taken the medicine yesterday , you would be well now。
Suggest , order , ask , demand , command , request , require etc.這些動詞的賓語從句用虛擬句， 在這些動詞后面的賓語從句中，助動詞一律是should 。
It is ( It was ) important ，其后的主語從句用虛擬語氣，助動詞用should 。
It is important that we ( should ) learn computer .
Wish + ( that ) 從句，通常表示不可能實(shí)現(xiàn)的愿望。 表示現(xiàn)在的動作或狀態(tài)是，從句中的動詞用過去時(shí);表示過去的動作或狀態(tài)時(shí)，從句中的動詞用had + 過去分詞。
但是，從句中動詞用would (might ) + 動詞原形時(shí)，表示現(xiàn)在或?qū)碛锌赡軐?shí)現(xiàn)的愿望
I wish I knew a little contract law . 但愿我知道一點(diǎn)合同法(我不知道)
I wish you would come tomorrow . 我希望你明天能來 (有可能來)
As if / as thought 引導(dǎo)的狀語從句(或表語從句)中，常用虛擬語氣。
如果從句表示的意思與現(xiàn)在事實(shí)相反，謂語動詞則應(yīng)使用過去式;
如果從句表示的意思與過去事實(shí)相反，謂語動詞則使用 had + 過去分詞的形式 。
基本句型
主語 + 謂語動詞 The two-man spaceship took off this morning 。
主語 + 謂語動詞 + 賓語 The drilling machine is making a hole 。
主語 + 連系動詞 + 表語 The answer is off the point 。
主語 + 謂語動詞 + 間接賓語 + 直接賓語
The new approach has saved us a great deal of time
主語 + 謂語動詞 + 賓語 + 賓語補(bǔ)足語 We like our guests to feel at home 。
所屬頻道：英語
責(zé)任編輯：阮老師
