九年級下冊英語重點短語解析

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現在完成時態

九年級下冊英語重點短語解析

⑴由have/ has + 過去分詞

⑵表示過去發生或已經完成的某一動作對現在造成的影響或結果

常與already, just , yet , ever, never 連用

have you finished your work yet?你完成了你的工作了嗎?

yes, i have. i have just finished it. 是的。我剛剛完成了。

i have already finished it . 我已經完成了。

have you ever been to china? 你曾經去過中國嗎?

no, i have never been there. 沒有,我從來也沒有去過。

⑶①表示過去已經開始,持續到現在的動作 或狀態和表示過去某一時刻延續到現在(包括現在在內)的.一段時間的狀態連用如:(for + 時間段,since + 時間點,或過去某一動作, 以及how long )

②注: 非延續性動詞在現在完成 時態中不能和for, since 引導的表示一段時間的狀語的肯定句連用。

應轉為相應的延續性動詞 如:

buy---- have die---- be dead join ---- be in

borrow----- keep leave---- be away

i have bought a pen.------ i have had a pen for 2 weeks.

the dog has died.------- the dog has been dead since last week.

⑷①have (has) been to + 地點 去過某地 已經回來

②have (has) gone to + 地點 去了某地 沒有回來

③have been in + 地點 一直呆在某地 沒有離開過 如:

she has been to shanghai. 她去過上海。(已經回來)

she has gone to shanghai. 她去了上海。(沒有回來)

she has been in shanghai for 2 days.她呆上海兩天了。(沒有離開過上海)

1.情態動詞must, may , might, could, may , can’t表示推測含義與用法後面都接動詞原形,都可以表示對現在情況的揣測和推斷但他們

含義有所不同

must 一定 肯定 (100%的可能性)

may, might, could有可能,也許 (20%-80%的可能性)

can’t 不可能,不會 (可能性幾乎為零)

the dictionary must be mine. it has my name on it.

the cd might/could/may belong to tony because

he likes listening to pop music.

the hair band can’t be bob’s. after all, he is boy!

2. whose 誰的 疑問詞 作定語 後面接名詞

如:whose book is this? this is lily’s.

3. belong to 屬於 如:

that english book belongs to me.

4. 當play 指彈奏樂器時,常在樂器前用定冠詞 如:

play the guitar play the piano play the violin

當play 指進行球類運動時,則不用定冠詞 如:

play football play basketball play baseball

5. if引導的條件狀語從句,主句用一般將來時,

從句用一般現在時代替將來時 如:

if you don’t hurry up, you’ll be late.如果你不快點,你將會遲到

6. if you have any idea== if you know 如果你知道

7. on 關於(學術,科目)

8. try to do sth. 嘗試做某事 如:i try to climb the tree. 我嘗試爬樹。

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