1.he gets to work in half an hour-anh ấy đi làm trog nửa giờ

2.it is not necessary for you to finish the work-S+don't/doesn't+V=it is not necesarry/important/...fot you to do

3.the bad weather prevented us from our picnic-prevent sb from st/doing st:ngăn cản,cản trở

4.my father took a taxi to go to hanoi last month-took a taxi=do by a taxi

5.the trip to HCM city wasn't as expensive as we expected-wasn't as expensive as(so sánh bằng)=was cheaper than

6.the children enjoyed walking in the rain-enjoy+ving

7.we have a two-month vacation-danh từ ghép

8.the sailors prefer the land to the sea-prefer doing/st/sb to doing/st/sb